Add xxhdpi check drawable for notifications

Fixes blurry mark as read icon on Android Wear. FREEBIE.
Merge pull request #1678 from veeti/check-icon

Add xxhdpi check drawable for notifications
use latest android number as recipient number

Fixes #791
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Update language translations.

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Bumping version to 2.1.0
emojicons

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always show enter key, better minheight
add pin, refactor keyboard height calculation