diff --git a/services/web/app/views/project/editor.jade b/services/web/app/views/project/editor.jade
index f8c7311205..e5161b3809 100644
--- a/services/web/app/views/project/editor.jade
+++ b/services/web/app/views/project/editor.jade
@@ -86,6 +86,7 @@ block content
 		window.userSettings = !{JSON.stringify(userSettings).replace(/\//g, '\\/')};
 		window.user = !{JSON.stringify(user).replace(/\//g, '\\/')};
 		window.csrfToken = "!{csrfToken}";
+		window.anonymous = #{anonymous};
 		window.requirejs = {
 			"paths" : {
 				"mathjax": "https://c328740.ssl.cf1.rackcdn.com/mathjax/latest/MathJax.js?config=TeX-AMS_HTML",
diff --git a/services/web/app/views/project/editor/chat.jade b/services/web/app/views/project/editor/chat.jade
index ae68d6a5ef..85d08d147a 100644
--- a/services/web/app/views/project/editor/chat.jade
+++ b/services/web/app/views/project/editor/chat.jade
@@ -1,5 +1,6 @@
 aside.chat(
-	ng-controller="ChatController"
+	ng-controller="ChatController",
+	ng-if="!anonymous"
 )
 	.messages(
 		infinite-scroll="loadMoreMessages()"
@@ -12,6 +13,12 @@ aside.chat(
 			.loading(ng-show="chat.loading")
 				i.fa.fa-fw.fa-spin.fa-refresh
 				|   Loading...
+			.no-messages.text-center.small(ng-show='!chat.loading && chat.messages.length == 0')
+				| No messages
+			.first-message.text-center(ng-show='!chat.loading && chat.messages.length == 0')
+				| Send your first message
+				br
+				i.fa.fa-arrow-down
 			ul.list-unstyled(
 				ng-click="resetUnreadMessages()"
 			)
diff --git a/services/web/app/views/project/editor/editor.jade b/services/web/app/views/project/editor/editor.jade
index e0f4160e95..aeeda6acfb 100644
--- a/services/web/app/views/project/editor/editor.jade
+++ b/services/web/app/views/project/editor/editor.jade
@@ -33,7 +33,7 @@ div.full-size(
 		include ./pdf
 
 	.ui-layout-resizer-controls.synctex-controls(
-		ng-show="!!pdf.url && settings.pdfViewer == 'pdfjs' && showControls"
+		ng-show="!!pdf.url && settings.pdfViewer == 'pdfjs'"
 		ng-controller="PdfSynctexController"
 	)
 		a.btn.btn-default.btn-xs(
diff --git a/services/web/app/views/project/editor/header.jade b/services/web/app/views/project/editor/header.jade
index 216818018a..a119c561db 100644
--- a/services/web/app/views/project/editor/header.jade
+++ b/services/web/app/views/project/editor/header.jade
@@ -3,13 +3,15 @@ header.toolbar.toolbar-header(ng-cloak, ng-hide="state.loading")
 		href,
 		ng-click="ui.leftMenuShown = true"
 		tooltip="Menu",
-		tooltip-placement="bottom"
+		tooltip-placement="bottom",
+		tooltip-append-to-body="true"
 	)
 		i.fa.fa-fw.fa-bars
 	a(
 		href="/project"
 		tooltip="Back to projects",
-		tooltip-placement="bottom"
+		tooltip-placement="bottom",
+		tooltip-append-to-body="true"
 	)
 		i.fa.fa-fw.fa-level-up
 
@@ -76,7 +78,8 @@ header.toolbar.toolbar-header(ng-cloak, ng-hide="state.loading")
 			tooltip-placement="bottom",
 			ng-class="{ active: ui.chatOpen }",
 			ng-click="toggleChat()",
-			ng-controller="ChatButtonController"
+			ng-controller="ChatButtonController",
+			ng-show="!anonymous"
 		)
 			i.fa.fa-fw.fa-comment(
 				ng-class="{ 'bounce': unreadMessages > 0 }"
diff --git a/services/web/public/coffee/ide.coffee b/services/web/public/coffee/ide.coffee
index 15983a05dd..2ea76ea57d 100644
--- a/services/web/public/coffee/ide.coffee
+++ b/services/web/public/coffee/ide.coffee
@@ -53,6 +53,7 @@ define [
 		}
 		$scope.user = window.user
 		$scope.settings = window.userSettings
+		$scope.anonymous = window.anonymous
 
 		$scope.chat = {}
 		
diff --git a/services/web/public/coffee/ide/chat/directives/mathjax.coffee b/services/web/public/coffee/ide/chat/directives/mathjax.coffee
index c2c211717a..1a0b0c45c2 100644
--- a/services/web/public/coffee/ide/chat/directives/mathjax.coffee
+++ b/services/web/public/coffee/ide/chat/directives/mathjax.coffee
@@ -11,7 +11,7 @@ define [
 			inlineMath: [ ['$','$'], ["\\(","\\)"] ],
 			displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
 			processEscapes: true
-
+		skipStartupTypeset: true
 
 	MathJax.Hub.Config(mathjaxConfig);
 	
diff --git a/services/web/public/coffee/ide/directives/layout.coffee b/services/web/public/coffee/ide/directives/layout.coffee
index f67f5a61f4..891d04f647 100644
--- a/services/web/public/coffee/ide/directives/layout.coffee
+++ b/services/web/public/coffee/ide/directives/layout.coffee
@@ -72,15 +72,20 @@ define [
 					repositionControls = () ->
 						state = element.layout().readState()
 						if state.east?
-							element.find("> .ui-layout-resizer-controls").css({
-								position: "absolute"
-								right: state.east.size
-								"z-index": 10
-							})
+							controls = element.find("> .ui-layout-resizer-controls")
+							if state.east.initClosed
+								controls.hide()
+							else
+								controls.show()
+								controls.css({
+									position: "absolute"
+									right: state.east.size
+									"z-index": 10
+								})
 
 					resetOpenStates = () ->
 						state = element.layout().readState()
-						if attrs.openEast?
+						if attrs.openEast? and state.east?
 							openEast = $parse(attrs.openEast)
 							openEast.assign(scope, !state.east.initClosed)
 
diff --git a/services/web/public/coffee/ide/editor/EditorManager.coffee b/services/web/public/coffee/ide/editor/EditorManager.coffee
index 1298d837e6..57f4f63091 100644
--- a/services/web/public/coffee/ide/editor/EditorManager.coffee
+++ b/services/web/public/coffee/ide/editor/EditorManager.coffee
@@ -9,7 +9,6 @@ define [
 				sharejs_doc: null
 				open_doc_id: null
 				opening: true
-				gotoLine: null
 			}
 
 			@$scope.$on "entity:selected", (event, entity) =>
diff --git a/services/web/public/coffee/ide/editor/directives/aceEditor.coffee b/services/web/public/coffee/ide/editor/directives/aceEditor.coffee
index 06315f917d..26cb5ced1e 100644
--- a/services/web/public/coffee/ide/editor/directives/aceEditor.coffee
+++ b/services/web/public/coffee/ide/editor/directives/aceEditor.coffee
@@ -33,7 +33,6 @@ define [
 				highlights: "="
 				text: "="
 				readOnly: "="
-				gotoLine: "="
 				annotations: "="
 				navigateHighlights: "="
 			}
diff --git a/services/web/public/coffee/ide/editor/directives/aceEditor/cursor-position/CursorPositionManager.coffee b/services/web/public/coffee/ide/editor/directives/aceEditor/cursor-position/CursorPositionManager.coffee
index ee35af07df..b058620c47 100644
--- a/services/web/public/coffee/ide/editor/directives/aceEditor/cursor-position/CursorPositionManager.coffee
+++ b/services/web/public/coffee/ide/editor/directives/aceEditor/cursor-position/CursorPositionManager.coffee
@@ -27,7 +27,7 @@ define [], () ->
 				if value?
 					setTimeout () =>
 						@gotoLine(value)
-					, 0
+					, 10 # Hack: Must happen after @gotoStoredPosition
 
 		storeScrollTopPosition: (session) ->
 			if @doc_id?
diff --git a/services/web/public/coffee/ide/file-tree/directives/droppable.coffee b/services/web/public/coffee/ide/file-tree/directives/droppable.coffee
index ea68630a21..890e345c23 100644
--- a/services/web/public/coffee/ide/file-tree/directives/droppable.coffee
+++ b/services/web/public/coffee/ide/file-tree/directives/droppable.coffee
@@ -3,9 +3,6 @@ define [
 ], (App) ->
 	App.directive "droppable", () ->
 		return {
-			scope: {
-				onDropCallback: "="
-			}
 			link: (scope, element, attrs) ->
 				scope.$watch attrs.droppable, (droppable) ->
 					if droppable
@@ -13,5 +10,5 @@ define [
 							greedy: true
 							hoverClass: "droppable-hover"
 							accept: attrs.accept
-							drop: scope.onDropCallback
+							drop: scope.$eval(attrs.onDropCallback)
 		}
\ No newline at end of file
diff --git a/services/web/public/coffee/ide/pdf/controllers/PdfController.coffee b/services/web/public/coffee/ide/pdf/controllers/PdfController.coffee
index 73c9190d49..82e9048dbb 100644
--- a/services/web/public/coffee/ide/pdf/controllers/PdfController.coffee
+++ b/services/web/public/coffee/ide/pdf/controllers/PdfController.coffee
@@ -223,17 +223,6 @@ define [
 	]
 
 	App.controller "PdfSynctexController", ["$scope", "synctex", "ide", ($scope, synctex, ide) ->
-		$scope.showControls = true
-		$scope.$on "layout:pdf:resize", (event, data) ->
-			if data.east.initClosed
-				$scope.showControls = false
-			else
-				$scope.showControls = true
-
-			setTimeout () ->
-				$scope.$digest()
-			, 0
-
 		@cursorPosition = null
 		ide.$scope.$on "cursor:editor:update", (event, @cursorPosition) =>
 
diff --git a/services/web/public/stylesheets/app/editor/chat.less b/services/web/public/stylesheets/app/editor/chat.less
index 717dc37309..f46e438801 100644
--- a/services/web/public/stylesheets/app/editor/chat.less
+++ b/services/web/public/stylesheets/app/editor/chat.less
@@ -7,6 +7,17 @@
 		text-align: center;
 	}
 	
+	.no-messages {
+		padding: @line-height-computed / 2;
+	}
+	
+	.first-message {
+		position: absolute;
+		bottom: 0;
+		width: 100%;
+		padding: @line-height-computed / 2;
+	}
+	
 	.messages {
 		position: absolute;
 		top: 0;
@@ -104,6 +115,8 @@
 		padding: @line-height-computed / 4;
 		border-top: 1px solid @toolbar-border-color;
 		textarea {
+			overflow: auto;
+			resize: none;
 			border-radius: @border-radius-base;
 			border: 1px solid @toolbar-border-color;
 			height: 100%;