introduce smarty_function_load_less:

- add CM_Asset_Css_File to be able to render single file
Extend only from single internal.php file
Check if file exists
Do not store internal.php in vcs, create internal config on test run
Ignore internal.js
Grp config entries
Change iterator options to return prefixes aka directories
Merge branch 'master' of github.com:cargomedia/CM
Adapted tests
Corrected tests
RE: Corrected tests
formatting
Added additional argument assertion ('return_prefixes') plus formatting
improve triangleBorder mixin
Merge pull request #1515 from christopheschwyzer/issue-1515

Improve triangleBorder mixin
Merge pull request #1495 from tomaszdurka/issue-1495

Possible issue with generating types
Merge pull request #1514 from ppp0/issue-1514

Let AWS S3 filesystem adapter handle directories, too
renamed load_less to load_lessFile
remove possiblity to skip adding variables
make _addVariables public