First standardization (including builder changes) between Joomla 2.5 and 3.x
created joomla.less and joomla-responsive.less as common less files between all Joomla versions
Moved all 3.x code to common files (setting it as the default version)
Contact categories view standardized
fixes #160
Merge branch 'standardize-j25-j3' of https://github.com/jatitoam/wright into standardize-j25-j3