Updating Less.php compiler 1.5.1.1 -> 1.7.0
Less.php compiler patch. https://github.com/oyejorge/less.php/issues/92
Patch for less.php compiler to fix https://github.com/oyejorge/less.php/issues/55
Removing internal modifications for Less compiler and updating to follow new version.
CSS compilation with default Less.php compiler
Turning on less.php cache
Merge branch 'develop' of github.com:impresspages/ImpressPages-CMS into develop