Fix SetLastModifiedByMetadataListener

Since RavenDb seems to have issues with slashs (\) on metadata
fields, we will store only the name, without the domain
Clean existing Last-Modified-By metadata attributes
Add a migration to delete the menu and change default menu
Merge pull request #267 from andresmoschini/fix-menu

Fix menu
Merge remote-tracking branch 'upstream/master' into devtech-profiles