Update translations

* Remove unused string arrays from master files
* Remove unused string arrays from translations
* French (DianeRouquine)
Update translations

* Catalan
* Czech
* Danish
* Norwegian
* Portuguese
* Thai
Update translations

* German
* Dutch (rderegt)
Update to Gradle 1.8
API key substitution
Bump version
Add lint.xml
Remove Todoroo EULA
Remove about activity, unused keys and strings
Remove astrid lite, set configuration preference
Pare themes to light and dark
Remove 'Customize' from task edit screen
Fix save task when pressing back

Closes #23
Add Joachim to .mailmap
Remove "No Activity" from task edit screen
Move trash can to action bar

Closes #13
Clean up themes

* Remove transparent, white, white alt themes
* Rename white blue to white
* Remove unused drawables
Update translations

* Catalan (DianeRouquine)
* French (DianeRouquine)
* Ukrainian (kuzyasun)
* Remove unused translations
Update action bar icons
Remove backup activity

* Move import/export tasks to backup preferences
* Remove unused translations
* Translation updates from kuzyasun, Kackar, rchacin