Use t3lib_compressor for CSS files
Currently the pageRenderer uses t3lib_compressor only when the TYPO3_MODE == 'BE'. This means that during frontend editing, individual stylesheets are loaded and are not combined. The number of stylesheets exceeds what IE can handle and results in an unstyled editing form.
The obvious solution would be for the page renderer to check for frontend editing also but we may need to look for an feeditadvanced solution until it can be handled properly in the core.
Fixed bug #9173: Use t3lib_compressor for CSS files
git-svn-id: https://svn.typo3.org/TYPO3v4/CoreProjects/feedit/trunk@2526 743128fe-103e-dd11-99c4-001b210b3e58