remove empty body XML tags + tweaks
combine widget refresh services + remove useless String.format()
Pop a Toast when exchange returns error when trading
refactor layouts and strings - more consistent naming
increase the axis value text size
move some Preferences code over to XML
use Listeners to handle preference clicks and changes
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Travis build using API v19
Target SDK 19
Accept new licence
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use Listeners to handle preference clicks and changes 2
Merge remote-tracking branch 'origin/develop' into develop

Conflicts:
	build.gradle