some error messages are now emphasized
added option to delete Phd Guidance Documents
Merge pull request #580 from cbartol/ticket/rt#422187

Corrected the style of some error messages, some error messages are now emphasized
Merge pull request #579 from cbartol/ticket/rt#404219

Added option for Phd Coordinators to delete Phd Guidance Documents
close #578
Bug fix: exceptions were being silently encapsulated and leaving
inconsistent data
Minor change: allow to create a registration with no learning agreement
as long as the agreement only requires the degree to be chosen
Refactor RegistrationAgreement to repalce it with RegistrationProtocol. Removed all possible references and uses of RegistrationAgreement. Added Alien RegistrationAgreement type.
Minor Change: Improved enrolments entry point

  * It is now based on GET instead of POST
  * It provides information regarding the enrolment date,
    as well as the remaining time
Adapted over 23 candidacy process to be more generic as a 1st cycle candidcay process.
Added text to inform about the options for data share authorization
Merge branch 'AfonsoFGarcia-ticket/331587' into develop
Bumped version for release of 3.8.0
Merge branch 'release/3.8.0' into develop
Bumped version for development after release.
Add a warning message in JSP files that are used in the first year candidate report
Merge pull request #584 from JNPA/feature/addSimpleComments

Update JSP files used in first year candidate report
Fix some issues with WeeklyWorkLoad
Generalized processes to also work for international students
New Feature: Thesis library sites are no longer CMS-based

  * The old ones still work, but this is now the official
    mechanism
  * Updated the library link to the new path
Re-styled not found and unauthorized pages