Improve rcube_utils::file2class() to not return duplicates

Aleksander Machniak

2013-05-28 fe0f1d589b2320905fa3dd73737d5b7b1cbc402a

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.panel_wrapper {height:85px;} 
.panel_wrapper div.current {height:85px;} 
 
/* IE */ 
* html .panel_wrapper {height:100px;} 
* html .panel_wrapper div.current {height:100px;}