Started on preferences.
Changed calendar icon
Cleared up some text and colors, and changed #000 to 'black'.
Merge branch 'dev' into prefsfragment

Conflicts:
	Barteguiden/src/main/res/values/strings.xml
Started.
Filter page is added to the action bar.

The fragment is working (i think), but I'm not sure if its supported on all android platforms, as fragments is used.