This change allows all input modes of codemirror to use the information
from an input esc-key and make this way vim and sublime more
functional. To prevent this change from breaking the return from the
fullscreen mode, it catches the esc-key in this case. Hopefully this is
an acceptable solution.
As before the vim-mode is handled different in fulltext-mode as it is
esc-key heavy.
Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>
