Merge pull request #983 from sexnothing/develop

Replace glyphicon width font-awsome
Merge pull request #984 from sexnothing/develop

Update bootstrap to version 3.1.1
Fixes #982: `Send message` link leads to 404 page if message module is not installed.
Merge branch 'develop' of https://github.com/pi-engine/pi into develop
Added access check to system user password and profile
Merge pull request #986 from sexnothing/develop

Message module update
System update for theme custom