User only can answer question once in lifetime
Updated mobileu version to 1.0.15
Questions bug
Merge branch 'develop' into feature/issue-45-bug-fixes
Updated the contact page copy
Fixed templates
Updated favicon
Updated url. (Thanks @retrorabbitWD)
Removed link
Merge branch 'feature/issue-45-bug-fixes' of https://github.com/praekelt/oneplus into develop

Conflicts:
	oneplus/urls.py