Fix keyboard shortcuts for special processing of CTRL and META

The processing of CTRL and META was in change
I8e7d552b3927047b31ced373eafac3436a70b277 unnecessarily removed. As a
result of this shortcuts like 'STRG+T were' interpreted as 'T'.

Bug: issue 3970
Change-Id: If782ca367a9c7f34db3b53fd1f2974f7a9127dfc
1 file changed