Bug 928283- Added button back
Merge pull request #12936 from gitmai/bug-928283-back-sim-pin

Bug 928283- Added button back (r=fcampo)
Bug 887110 - Typical clocks show quarter hours as more prominent than 10min marks
moving clock face svg to separate file
css fixes, tag name changes for analog/digital - per Mike's review
cleaning up svg file
removing some svg tags, is creative commons needed?
adding margin to clock hands to offset tall clock face
testing ratios for clock hand placement
using padding-top to account for tall clock mark - per Mike's review
fixing margins on device
added margin for snapping
padding fix to 3.9%