gitconfig: web browser

Signed-off-by: Adrian-Tudor Panescu <adrian@panescu.com>
bashrc: edit vimrc alias

Signed-off-by: Adrian-Tudor Panescu <adrian@panescu.com>
vimrc: additions

* UTF-8 fix.

* Map ; to ;.

* Mapping to quickly open vimrc.

* New bundles: NERDCommenter, YankRing, RainbowParentheses, VimFugitive.

* Remap clear search.

* Remap copy/ paste from system clipboard.

* Mappings for indentation fix, sane wrapped line navigation, easy window
  navigation, TAB to see matching bracket, and split and switch window.

Signed-off-by: Adrian-Tudor Panescu <adrian@panescu.com>