Adding navbar sample
sprint2_showfilesofmasterbranch
add Navbar Class
Navigation bar improvement
Merge pull request #10 from EDA397-GROUP4/sprint2_showfilesofthemasterbranch

Merge "show files of selected commit" story
Merge pull request #12 from EDA397-GROUP4/3_NavigationBar

Merge "Add navigation bar story"
Add Navigation bar to DisplayFiles + Scroll
Merge ProjectStoriesOverview with master + add navigation bar

Conflicts:
	AndroidManifest.xml
	res/values/strings.xml