[#173]read and display version info
[#173]Use URL for correct project
[#173]Make tag into Github link
Merge branch 'feature/git_info' of github.com:akvo/akvo-rsr into release/candidate

Conflicts resolved in:
	akvo/templates/admin/base_site.html
Merge branch 'release/candidate' of github.com:akvo/akvo-rsr