Revert "Local: Add Qt5-beta1 to $PATH."

Using `ppa:canonical-qt5-edgers/qt5-proper` + `qtchooser` instead.

This reverts commit e51470673c373820625435196a6cef5413076030.
Vim: +Shougo/neocomplcache for fuzzy completions.

Finally a sensible way to have fuzzy completions in Vim which are not
intrusive (g:neocomplcache_disable_auto_complete = 1). What this means
is 'gH<C-J>' expands to 'gridHorizontal' if a local variable with the
name exists. W00t!