don't crash if no view has been created when changing network providers
use Android ActionMode for selecting trips
fix crash when no result was returned for QueryMoreTrips
add icons for light theme and API < 11
turned TripDetails into a Fragment
make trip details fold out as fragments in trip activity
fix crash on some devices when starting TripDetailActivity
implement sharing trips as text/plain

closes #21
improve trip layout, make showMore button easier to hit
bring back show platforms button to new TripsActivity
implement action to add trips as calender events
Merge branch 'dev' into compat

* dev:
  implement action to add trips as calender events
  bring back show platforms button to new TripsActivity
  improve trip layout, make showMore button easier to hit
  implement sharing trips as text/plain
  fix crash on some devices when starting TripDetailActivity
  make trip details fold out as fragments in trip activity
  turned TripDetails into a Fragment
  add icons for light theme and API < 11
  fix crash when no result was returned for QueryMoreTrips
  use Android ActionMode for selecting trips
  don't crash if no view has been created when changing network providers

Conflicts:
	src/de/grobox/liberario/TripDetailActivity.java
	src/de/grobox/liberario/TripsActivity.java
Reapply previous compat changes
Actionbar icons are now shown(see #2)
Use darker icons for API Level < 11(see #2)
Move setColor() after mutate to fix API < 11 compatibiity