Updating Helm settings and adding new bindings

* Added helm-mode to `use-package` idle timer to speed up opening
* Bindings:
"s" prefix signifies showing buffer data:
 - l = links / tags\
 - y = yank / kill ring
 - m = mark ring
 - r = registers

"f" prefix signifies file activies
 - h = helm-find-files

"F1" default tied to help, so now is `helm-apropos`
Made modifications per discussion on GH, reimplemented on current HEAD
Merge pull request #83 from ralesi/new_develop

More Helm key bindings and Helm configuration

Also idle timer for Helm loading.