Update API tests
Now unit edit validations are triggered on tab changing
Set email in lowercase when building the certificate url
Merge pull request #36 from kaleidos/better-unit-edit-checks

Now unit edit validations are triggered on tab changing
Minor improvements to content validation and some missing translation
Bugfix, don't check content id or url in units

Avoid hide the edit button in units if their title is too long.
Max width for the KQ's title in content edition view
Add a tooltip with the uncut name of the unit if it is too long
Make user to select a comunication type in the contact form, default value is non-selected comunication type
Bump djangosaml2 dependency to 0.9.1