[emacs, bash] Refreshed packages, add compat for emacs shell, add SCSS/multi-cursor support

[emacs]
* Refreshed color-themes.
* Refreshed packages: feature-mode, rvm, web-mode.
* Added SCSS support.
* Added multi-cursor support. This doesn't work 100% yet.
* Set web-mode spacing to 2 spaces instead of 4.

[bash]
* Modified invocation for auto-jump.

[bash,emacs]
* Added compatibility to pick other paths using path_helper for
  macosx.