Summary of commit

Additions:
* required.el:
  - Add emmet-mode
* modified.el:
  - Add delete-selection-mode to replace highlighted text
* keybindings.el:
  - Add keybinding for toggling emmet-mode
* functions.el:
  - Add hs-non-web-mode
* enabled.el:
  - Add sub description for other-window
* disabled.el:
  - Add emmet-preview-default
* auto-install.el:
  - Add emmet-mode

Modifications:
* modified.el:
  - Replace css to sass for sass$ auto-mode-alist
* functions.el:
  - Indent remove-completions-buffer function description to 2 spaces
* enabled.el:
  - Replace excess comment semi-colon to just one semi-colon

Bug fixes:
* hooks.el:
  - Replace hs-minor-mode to hs-non-web-mode to avoid web-mode from issuing error
* enabled.el:
  - Remove excess closing parens for other-window
* disabled.el:
  - Replace inhibit-splash-screen value from nil to t