Revert changes made in r927.

Less flicker in one way, but bad in so many other ways. Thus, reverted.


git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@931 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Catch error when trying to remove non-existing file.

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@932 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Bind KP_End/KP_Pos1 to Last/first page as well.

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@933 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Wrong action for 'Toggle slideshow'

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@934 ef8490bc-f317-4725-81ed-e95a9aca1bcf