Move ftw.builder to tests requirements.
Add change local roles form.
Extend participants table with the "change role" column.
Test if change role view respects the delegate permissions.
Update translations
Fix change_local role tests.
Fix participants browser tests.
Move participants form to it's own template.
Add participants-tab (ftw.tabbedview tab).
Hide canel button on tabbedview-tab.
Reload tab on tabbedview / Reload page on others.
Move invite overlay js code to participants form view.
Implement overlays for participants-tab.
Show portal messages on participants-tab.
Do not show change link if user has not yet accepted the invitation.
Remove js from registry, include it directly in the invitation.pt.
Fix js inditention, fix missing semicolon.
Make sure the user cannot change his roles.
Clearify test cases / some code cleanup
Merge pull request #26 from 4teamwork/mle-change-roles

Implement changing the roles of a participant and a participants-tab (ftw.tabbedview