added missing letters (german translation)
French translation by Alex Wilder
ADK updates
Project parser checks for prepending space
Closes #267
Merge pull request #268 from eisbehr/french-translation

French translation by Alex Wilder
Merge pull request #261 from choas/master

Added missing letters in German translation
Update Twitter handle to @todotxt
Remove Show line numbers setting to reduce clutter (it's ugly anyway)
Combine Date new tasks and Show task age preferences
Don't force twitter.com redirect
Add xhdpi application icon
done.txt and Dropbox revision support
* Archive completed tasks to done.txt either manually or automatically (in Settings)
* Check file revision number before uploading or downloading changes to avoid clobbering the todo.txt or done.txt on either end
closes #41, closes #276, closes #236
Improve Work offline feature
* The "work offline" option is now called "manual sync", which better represents what is happening because the app now works offline without going into an offline mode.
* When not connected the app works just like it does connected, but will tell you with toasts that syncing couldn't be done. Will sync as soon as the device reconnects.
* Syncing happens more often to reduce merge problems (before adding a task & when phone reconnects)
closes #248, closes #209, closes #161, closes #271, closes #277
Added German translations for archiving feature
Copy tweaks
* Only capitalize first word in settings panel
* Move File location to top of Dropbox settings area
* Various minor copy tweaks and clarifications
Reduce unnecessary syncing
* Don't assume a need to push unless we have modified a task. At the same time, never assume a need to pull. Added Generic SYNC_WITH_REMOTE intent for those ambiguous cases. That intent's handler will determine based on a persistent flag whether we need to push. The flag is set whenever a push is initiated directly, and cleared when that push succeeds or when a pull is later manually initiated.
* Only sync after a connectivity change if we previously had no connectivity. Otherwise, we were syncing every few seconds. (whenever there was a signal change?)
* Check for 404 errors specifically, instead of assuming all errors mean a non-existent remote file.
* Added some logging in Dropbox logic.
* Modify unit tests to work with new changes that look for DropboxServerException for missing files.
If user has scrolled down, maintain list position during background pull
Swipe to complete tasks
* Left to right swipe on an incomplete task to mark it as complete
* Right to left swipe on a complete task to mark it as incomplete
* Deprecate "Quick complete" setting
Release 30, version 1.0
Dropbox is apparently case-insensitive when it comes to paths.

If you upload 'todo/todo.txt' it will happily replace an existing 'TODO/todo.txt' file if the revs match.
We should ignore files that differ only by case when checking that our uploaded file was
saved with the name we gave it on Dropbox.