Fixed notification behaviour
Update README.md

Add F-Droid link
Merge new README (edit from github)
Fix conditional notification display (issue #10)
Merge pull request #9 from florian89/master

Add German Language
Add Spanish transaltions
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/com/casimirlab/simpleDeadlines/NotificationCenter.java
	src/com/casimirlab/simpleDeadlines/data/DataHelper.java
	src/com/casimirlab/simpleDeadlines/data/NotificationAdapter.java

I hope I did merged correct
Solved merge-errors