This commit addresses a few lint related issue - notable one is ignoring
undefined methods within source code comments.

Add DateTimeField search descriptions options for supported methods

Retire the need to auto-load the criteria of the last search - it's no
longer necessary since Recent Searches are now supported.

* Make saving advanced ticket search intuitive
* Make save separate operation from search (primary)
* Show inherited criteria on parent queue change

Conflicts:
	include/class.export.php
	scp/tickets.php

Add ability to select fields / columns to export for queues, including adhoc
searches.

* peter/feature/nested-kb-categories:
  FAQs Fixes
  Knowledge Base Folder Icon Positioning
  Add ability to nest Knowledgebase Categories

* aa/issue/dashboard_stats:
  Edit tool tips, add Date Range above Statistics
  dashboard statistics improvements/minor fixes

* kevin/issue/xss-agent-directory:
  xss: Prevent Agent Directory XSS

* kevin/issue/redactor-chrome-issue:
  redactor: Chrome Formatting Issues

* kevin/issue/list-and-choice-search:
  issue: List & Choice Searching

* kevin/issue/send-login-errors:
  issue: Send Login Errors Still Sends

* ntozier/ldap-relevance:
  Fix for LDAP/AD auth plugin

* peter/issue/ticket-filter-data:
  Ticket Filter Data Custom Forms

* Chefkeks/client-date-picker:
  Fix DatePicker on client side

* Chefkeks/translate-user-organization:
  Fixes #3650

* 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'