Uses the first key that the user has for testing post receive hook.

This helps with compatibility with more LDAP providers as the implementation
doesn't depend on the exact names of the LDAP fields. The LDAP strategy
helps maps the attributes to the fields in the info object and we use the
info object to get the email and name.

This makes the LDAP auth compatible with most OpenLDAP servers as well.

ProtectedBranches model, Master permission for repo\n Allow push to protected branch for masters only

Project - restyled show page, removed info page
Repository - restyled show page, added download option
Tags - added download options