Continuing migration to CtrlP

- Shaping up.
- I must say I don't get why <c-p> was used for so much.
  - I decided to ditch it so I could use <c-n> and <c-p> in a more
    <c-n> and <c-p> kinda way
- I also use mnemonic key mappings as well, just like I did with
  fuzzyfinder, since that worked pretty well for me
- I love the configurability of this plugin