Append modeline in vim, binds on i3 and new feeds.

.vim/vimrc:
- AppendModeline(), binded to \ml, for appending modeline automatically
  in the end of the file.

.i3/config:
- Added keybindings for moving a workspace from a monitor to another
  above or below current monitor;
- Added keybinding for switching a container from a workspace back and
  fourth.

.newsbeuter/urls:
- Some new feeds.