Concrete CMS Files

# 5.4.2.1 Release Notes

## New Features

* Updated the YouTube block that fixes IE bugs, works with youtu.be URLs, allows the size of the video to be changed, and supports mobile devices.

## Bug Fixes & Security Improvements

* Fixing bug where custom template changes would be immediately visible on a live site.
* Fixed bug where editing a custom style would display the wrong style name in the confirmation area.
* Updated security "regenerateSession" function to work better in IE than php's built-in session_regenerate_id() function.
* User Attribute cache was persisting even when it was supposed to be cleared, leading to unsortable user attributes, data retention, etc...
* Fixed bug in the mail helper where interaction with new helper code could lead to many duplicate emails being sent if they all are sent in one request.
* Reverted a fix for zip_open failing on larger archives on 64-bit linux. Rewrote solution to hopefully fix both problems. Should fix problems with zip not unpacking marketplace archives.
* Fixed bug where renaming a block in a scrapbook with a space in it fails to work
* Fixed bug with layouts where spacing wasn't being honored.
* Fixed bug where Zend Framework would complain if it already appeared with the include_path before concrete5 loaded.
* File downloads should no longer hang the active session
* Fixed nav bar in the settings section (thanks 12345j)
* Fixed some bugs in the sample content (thanks 12345j)
* Fixed bug when getting page by path with a trailing slash (shouldn't happen through front-end request, only through API)
* Fixed places where strings weren't being translated.
* Fixed http://www.concrete5.org/developers/bugs/5-4-2/filemanager-sets-can-type-when-add-to-set-isnand039t-selected/
* Fixed bug where add-ons wouldn't download under certain circumstances.
* Composer sometimes wouldn't publish the latest version when clicking "Publish," due to a conflict with autosaving. This is fixed.
* Sometimes previewing a page in composer wouldn't have the most up to date copy of the page.
* Fixed bug in advanced permissions where blocks couldn't be reverted to area permissions because the button didn't exist.

## Behavioral Improvements

* Stripping tags from JSON response because of some plugins/malware that injects HTML into a response, screwing up editing
* Modified Zend Framework's Loader.php to fix bug where Zend Framework improperly whines about open_basedir when loading Zend_Translate in some cases
* Rich text editor attribute should load the required javascript and css to display the concrete5 toolbar.
* Autocomplete select attribute mode should work when you haven't already loaded the necessary javascript and css. 
* Date picker no longer dies without javascript if jquery UI isn't included in header.

## Developer Updates

* Added a clear option to the page selector form helper.
* Added shortenURL() function to the URLS helper that shortens URLs with the TinyURL API (thanks 12345j)
* Added DATE_APP_DATE_PICKER constant that controls the jQuery UI datepicker dateFormat property. Documentation here: http://docs.jquery.com/UI/Datepicker/formatDate