Review #242137 - IllegalArgumentException: The input text cannot contain carriage return char \r

Please review the bug fix for

https://netbeans.org/bugzilla/show_bug.cgi?id=242137

Description: When a file where are AngularJs controllers assigned to the 
html templates is not open in the editor, then the content of the file 
is taken from the file object directly. This brings problems with 
converting \r chars. The fix is to don't use the content from file but 
from snapshot.

Impact: Causes IllegarArgumentException in an html template, if the 
template uses controller defined in js file with '\r' at the end.

http://hg.netbeans.org/web-main/rev/6e84eb1e7ea0

Thanks,
Petr