Bug 887110 - Typical clocks show quarter hours as more prominent than 10min marks

- Analog clock face changes
    - Removed .png files for marks at 1, 1.5x, 2.0x
    - Inserted new analog clock face SVG into clock's index.html
    - Positioned current hands to fit this clock face, but those hands will change to new SVG paths
    - Separated height/width declarations in CSS
- Tests
    - Tested this new face manually in browser and on Unagi
    - Tested the resizing by adding/removing alarms to cause the alarm list to grow/shrink and face to resize
    - Wasn't sure how to test the removal of images for 1.5x and 2.0x scale devices
- Issues
    - Found a new bug: clock doesn't resize to largest size when all alarms are deleted from a list, but that can maybe be taken care of with this bug later: https://bugzilla.mozilla.org/show_bug.cgi?id=910854
    - CSS file was not refactored in its entirety, perhaps for a later bug?
    - SVG for analog clock face is massive, is there a better way to include that in the html?