formatting
fix mapping for slimux
activate newly added g:neocomplete#enable_omni_fallback
add "aufzutreiben" spelling
Improve colorcolumn and curserline.

The colorcolumn is no set per buffer. Both colorcolumn and curserline
are only shown in the active buffer, as they can get quite irritating
when shown in inactive buffers.
Add a useful and beautiful, yet minimal statusline

I somehow changed my opinion on statuslines.
Remove unused "FollowSymlinks" function