Added spaces after colons per note

Alphabetized descriptors

Replaced gradient with css gradient, updated styles per noted guidelines, added L10n comments

Used mixins for gradients, used existing clearfix class, alphabetized rules, added spaces after colons where they were missing

Removed commented line, which I believe is what the note is about.

Readded mouseovers on transparent circles following rebase

Aesthetic changes to UI, pass 2

* Crisp edges for y-axis grid
* 'Statistics' orange color updated with orange from style guide
* Added top margin to .bars
* Removed inset shadow
* Removed monotone interpolation
* Thicker paths
* Cleaner grids, removed axes, fewer x-axis labels, x-axis labels no
longer rotated
* 'Update' button label changed to 'Apply'
* Formatted numbers in tooltips (e.g. 1000 -> 1,000)
* Hovering on a series name in the legend dims the other series rather
than thickening the selected path
* Removed 'Total' from chart names since it seemed unnecessary
* Replaced logo with one resized using "bicubic sharper" since the
in-browser resampling was making it look fuzzy in Firefox (it was fine
in Chrome)

Added spaces after colons per note

Alphabetized descriptors

Replaced gradient with css gradient, updated styles per noted guidelines, added L10n comments

Used mixins for gradients, used existing clearfix class, alphabetized rules, added spaces after colons where they were missing

Removed commented line, which I believe is what the note is about.
Removed y-axis inner label, increased top padding for x-axis labels, removed rotation for x-axis labels, removed interpolation, increased size of circles to 4
Merge branch 'master' of https://github.com/almossawi/marketplace-stats

Conflicts:
	src/media/css/chart.styl
	src/media/css/stats.styl