LIBDOTFILE-9 Correctly source the powerline config

When it is quoted the '~/' is not expanded
Add missing sudo directive

Just want to be thorough
LIBDOTFILE-9 Makes powerline install system wide

This allows access without PATH meddling
Merge branch 'feature/LIBDOTFILE-9' into develop
Add flow-quick-release git command

Some projects don't track any version information so there is nothing
between release start and end. This just saves some typing.