* rbukovansky/copyright-translations:
  Allowing translation of copyrights in footers

login: Fix CSRF fail, add shake effect on authentication fail #3955 (minor fix to SQL query generated)

* greezybacon/issue/login-csrf-fail:
  login: Use AJAX to authenticate, add a shake effect
  login: Clear session data on expiration

* aa/issue/attachment_downloads:
  Exclude Vulnerable Image Files
  Only allow image attachments to be opened in the browser window

* aa/issue/ticket-preview-collabs:
  fix manage collabs for ticket preview contd
  fix manage collabs popup from ticket preview

* nicoletta-maia/develop-fix_orderby_relevance:
  Issue: SQL Error Unknown column '__relevance__' in 'order clause'

Add ability to export agents access in CSV format

Merge remote-tracking branch 'kevin/issue/default-dept-private-error' into features_prs/develop-next

Merge remote-tracking branch 'kevin/issue/task-action-button-styling' into features_prs/develop-next

This addresses an issue where the Delete Task Action Button had the wrong
classes which gave it the wrong styling. This corrects the class to make
the Delete button look like the other buttons and still have the red
background on hover.

Merge remote-tracking branch 'kevin/issue/ticket-preview-custom-fields' into features_prs/develop-next