[BUGFIX] Make shariff.js work with IE
[BUGFIX] Make shariff.js work with IE

Since IE does not allow spaces in the window name we use „_blank“ as
window name.

See:
http://stackoverflow.com/questions/710756/ie8-var-w-window-open-message-
invalid-argument/1462500#1462500

P1tt187/shariff,andrelohmann/shariff,rolandgeider/shariff,kraftner/shariff,kraftner/shariff,medienverbinder/shariff,craiq/shariff,andrelohmann/shariff,bozana/shariff,medienverbinder/shariff,heiseonline/shariff,medienverbinder/shariff,P1tt187/shariff,ArneBab/shariff,andrelohmann/shariff,rolandgeider/shariff,ArneBab/shariff,bozana/shariff,rolandgeider/shariff,bozana/shariff,kraftner/shariff,ArneBab/shariff,craiq/shariff,P1tt187/shariff,craiq/shariff