Description of problem:
In WebTrans, text in source messages can no longer be copied by the regular copy text method (i.e. highlight the text then press ctrl-c or right click and select Copy).

This affect the usage, as translator might copy the part of the source message and paste the text as search terms to get more information.

This can be produce in both Firefox and Chrome.

Version-Release number of selected component (if applicable):
Zanata version 1.8.0-SNAPSHOT (20120921-1422)

How reproducible:
Always

Steps to Reproduce:
1. Visit any document.
2. Highlight any text in source messages.
3. Right click on the highlighted text
  
Actual results:
No "Copy" appeared in the right-click menu.
Nor the keyboard shortcut (Ctrl-C 

Expected results:
"Copy" function appears in right-click menu
and works successfully.

Additional info:
This symptom does not occur in 1.7 Servers.