Conpherence - some cleanup type stuff

Summary:
this diff does a few, not so exciting things

- changes "conpher" to "conpherence" where it snuck into CSS, spritemap, etc -- I believe we now consistently call it conpherence. Feel free to change it, just change it everywhere. :D
- puts the widget icons in the right order per M14
- makes the "mobile-only" widgets show the toggles only in the mobile view
 - also made it so clicking them does nothing for now
- removes the tasks widget since we don't want it

...my time is getting chopped up funny (yay puppy) so this is just an attempt at something that can go into the codebase and not make it worse. Next up is making the widgets that show on desktop look right / not say "TODO"

Test Plan: played around in Conpherence

Reviewers: epriestley, chad

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T2530

Differential Revision: https://secure.phabricator.com/D5334