Restructured alias file a little:
* Removed 'v' alias for vim, never used
* Put aliases for editing $HOME/.{alias,bashrc,vimrc} by themself
* Sorted stuff.
Autocomplete improvements:
* Removed specific autocomplete commands (sudo, man), now works
  for other commands previously not specified such as aptitude.
* Put autocomplete changes in same if-clause that checks if it's
  available to begin with.
* Removed ### asddas {{{ spam.
Structured comments somewhat better for history settings.
Removed 'math' function as I never use it. (b)python interpreter is better.
Structure all sourcing of files together.