initial showcase implementation
fix wrong library path
Avoid action bar term
avoid overlaying the system buttons

This is actually quite a hack. If someone knows a better solution, we
can and should revert this.
cleanup search activity showcase
crowdin: New translations
Merge pull request #4210 from rsudev/crowdin_translations

crowdin: New translations
Merge remote-tracking branch 'bananeweizen/showcase' into release
Add files necessary to build on CI
Change actionbar to title bar
Merge branch 'release' into upstream

Conflicts:
	main/project.properties
	main/res/values/strings.xml
	main/src/cgeo/geocaching/LogCacheActivity.java
Merge branch 'release' into upstream