* cover caching overhaul
* add ui for removing custom cover
* skip some loading work
* minor cleanup
* allow refresh library metadata to refresh local manga
* rename metadata_date to cover_last_modified
* rearrange removeMangaFromLibrary
* change custom cover directory
add setting for updating cover when refreshing library
* remove toggle and explicit action for updating covers
* Replaced datepicker with MaterialDialog's one
* Removed max date due to library bug (afollestad/material-dialogs#1973)
* Removed old date picker view.
* Started working on MAL support
* Added date picker UI
* Replaced Date with Calendar
* Added MAL remote update functionality
* Join url methods listEntryUrl and editUrl
* Removed unused methods
* Renamed mangaEditPayload to mangaEditPostBody
* Moved code to separate method
* Uniformed code to project conventions
* Removed wildcard import
* Moved MyAnimeListTrack to private class
* Improved MyAnimeListTrack name
* Removed redundant code
* Add start/finish date in local database
* Fixed format and improved codestyle
* Fixed typo and fixed TrackHolder's format
* Improved code style
* Ran linter
* Add database updating methods
* Change date format to fit new layout
* Review Commits
* Improve SetTrackReadingDatesDialog readability
* Move private methods after public ones
* Fixed SQL error
* Fixed remove date button
* Updated MaterialDesign methods to latest version
* Replaced dismissDialog() with dialog.Dismiss()
* Fixed wrong string resource usage.
* Use a wrapper around Manga to supply glide with proper equals() and hashCode() impl. for caching
* reload image if url has changed
* ignore case for http scheme comparison
* more ignore case for http scheme comparison
* fix indenting
* use data class for MangaThumbnail
