Removing Deprecated XFire Services
Added DTD declarations to Struts XML files

  * With the removal of XFire, the deprecated XML validator was removed,
    so now the XML must be well-formed
Migrating Teacher
Migrated WebsiteManager
Recovered old CMS code
Moved Installer into a Bennu Bootstrapper

  * Also fixed typo in Installation class
  * Removed duplicated Installation fields
Updated Migration Instructions
Refactor: Updated fenix-legacy-tools, removed references to Language

  * Also using the new MLS API
Removed GWT
Extracted Card Generation into a separate module
Extracted Parking functionalities into a different module
SearchDegreeStudentsGroup is not a group
Deleted group conversion
Deleted old groups that had no invocations
Refactored persistent groups to bennu 3 arquitecture. Using new groups, deleted old ones
RoleCustomGroup - PersistentRoleGroup
AcademicOperationGroup back to old name