basic editing of tasks title and content now possible
content and title is now easily editable
deadline is now displayed in a label in the detailed view
formatted date added input hint and a default date to tasks
fixed date displaying the previous date set
editing of priority now works
gui no longer a cluster fuck
Merge branch 'feature/editTask' into develop

Conflicts:
	Android/DAT255Grupp12Project/DAT255Grupp12/src/main/java/se/dat255/grupp12/Task.java
	Android/DAT255Grupp12Project/DAT255Grupp12/src/main/res/values/strings.xml
fixed up navigation to work with updating tasks
Merge branch 'develop' of https://github.com/villepetersson/DAT255-Grupp12 into develop

Conflicts:
	Android/DAT255Grupp12Project/DAT255Grupp12/src/main/AndroidManifest.xml