Navigation Bar Application Launcher
OngoingNotifPreference: prevent crash when reading drawable
Make App launcher an independent unit
Allows more generic use, e.g. can be set as hardware key action (to be
implemented) or for additional navigation bar app launcher key, or
anything else in the future.
HW Key Actions: action to show application launcher
Updated SB background color summary
- transparency is not set here anymore
Update strings.xml

Traditional Chinese (Taiwan) translation updated
Updated Portuguese (PT) translation
Updated Portuguese (BR) translation
Pie: turn Search key into multi-functional key
Allows Search action or App launcher action
Merge pull request #215 from Eric850130/patch-7

Update strings.xml
Merge pull request #216 from bgcngm/master

Updated Portuguese (PT and BR) translations
Updated Portuguese (PT) translation
Updated Portuguese (BR) translation
Merge pull request #217 from bgcngm/master

Updated Portuguese (PT and BR) translations
Merge branch 'master' of https://github.com/C3C0/GravityBox