Ignore Android Studio related files

.idea as AS is based on IntelliJ, and .iml
Upgrade versions of gradle, gradle android plugin, and Android build tools
Update travis.yml build tools 19.1.0
Merge pull request #637 from garvankeeley/travis-update

Update travis.yml build tools 19.1.0
Merge pull request #633 from keverets/androidstudio

Android Studio tool update
dded basic logging, and changed to dark style
Make text black fore style change
WCDMA requires not just API level 18, but SDK 18, which Fennec doesn't support. Refactored so that MozStumbler has WCDMA in the client, and the service does not.
Log activity uses local broadcasting do decouple the service from the LogActivity.
Enabled MozStumbler to use passive mode when not actively scanning.
added up arrow navigation to action bar
dded basic logging, and changed to dark style
Log activity uses local broadcasting do decouple the service from the LogActivity.
Merge branch 'dark-style' of https://github.com/garvankeeley/MozStumbler into dark-style

Conflicts:
	src/org/mozilla/mozstumbler/client/LogActivity.java
	src/org/mozilla/mozstumbler/service/scanners/GPSScanner.java
Need android.support:appcompat-v7:19.+ for dark theme I am using