Merge pull request #699 from da-kid/master

Partial fix for #597 (Navbar)
Change keybase submodule to our fork
Merge branch 'master' of github.com:open-keychain/open-keychain
Update subnodule keybase to fixed version of support libs
code cleanup and plurals in import log entries

closes #698
Update android gradle plugin to 0.12.0
Update git submodules for android gradle plugin to 0.12.0
Fix supertoast submodule
Try new travis hack
Update keybase lib
travis: update sdk
fix nullpointerexception in importkeyactivity
pass import results through to viewkeyactivity on update
Added button_rounded style
converted decrypt_file_fragment to new style
Improved button style
centered buttons
removed commented-out button
Updated file_dialog to use the new buttons
Added new button style and converted account_settings and the select_secret_key_layout to use it
Converted AsymetricKeyFragment to new button style
Ported even more buttons to use new design (Key and User editor)
Added drawables for them
Converted all other buttons