Add new constant for physical folder url, update all admin asset calls to use new constant.
Fixes #1552 - Make sure that only one title can be added on a HTMLPage
Use `removeFromHead`
Removing pointer cursor from selectable table td
Merge pull request #1556 from DavidOliver/issue-1216

Removing pointer cursor from selectable table td
Removing Content-Length headers from error/exception pages
Merge pull request #1561 from DavidOliver/issue-1557

Removing Content-Length headers from error/exception pages. Closes #1557
Added the IF EXISTS clause on the delete form entries data
Merge pull request #1564 from DeuxHuitHuit/drop-entry-table-if-exists

Added the IF EXISTS clause on the delete from entries data table
Merge pull request #1555 from DeuxHuitHuit/admin-page-set-title

Prevent `AdministrationPage->setTitle` from creating duplicate title elements. Fixes #1552
Correct upload field permissions check. Closes #1565
Update Date field earlier/later ranges to match those of MySQL's DATETIME field type. Closes #1560
Fixed by moving workaround from `content.systempreferences.php` to `setArray()` method of `Configuration` class. Added `overwrite` boolean parameter to `setArray()` to allow more control over how the provided array is integrated with the existing configuration. Closes #1168. Fix originally by @remie.
Fix the updater (regression from previous commit)
The Checkbox field will check that the passed value is 'yes', not that any value has been passed when it is a required field. Closes #1569
Correctly recurse through page children when updating template files or URL handles. Fixes #1568
Adjut the install boot to make use of bundle.php. Closes #1521
There is no need to include the CONFIG on every page load.. at least not anymore!
Add correct spelling for InitialiseAdminPageHead delegate. Old delegate name is supported for one major release cycle. Closes #1550
Prevent broken SQL when a system:id filter is empty. Fixes #1567