Update Vim configuration

* Add new keyboard shortcuts (`Y` and `gd`).
* Change keyboard shortcut `\rc`.
* Remove unused keyboad shortcut `\ `.
* Remove duplicate colorscheme selection.
Refactor Vim configuration

* Change indentantion
* Move some codeblocks through the file
* Improve comments
Change `.vimrc` indentantion
Refactor `.bashrc`

Remove a lot of the default code. Use tabs for indentantion. Move nearly
all aliases from `.bashrc` to `.bash_aliases`.