* add local source
* small fixes
* change Chapter to SChapter and and Manga to SManga in ChapterRecognition.
Use ChapterRecognition.parseChapterNumber() to recognize chapter numbers.
* use thread poll
* update isImage()
* add isImage() function to DiskUtil
* improve cover handling
* Support external SD cards
* use R.string.app_name as root folder name
* Added french string values in res
* Added french in the list of languages available
* Fixed remaining //
* Update manga plural according to http://www.academie-francaise.fr/niky-orange
* Update translation based on M2ck's remarks
* Translating remaining english bits and fixing some typos
* Further fixes according to M2ck's suggestions
* Ninja typo fix !
* Updated tapping string with french translation and updated a pretty awkward literal translation
* Updated translation to new strings
