Add dark theme files, ref #39
Fix progress bar color not setting to chart color

Due to the theme, have to set `background-image` as well. Ref #39
Change to dark background on typeahead menu

Ref #39
Add theme prefix, ref #39

This should make it easier to switch themes around however we need by
toggling a class. There are issues with typeahead.js if the
`background-color` of an input changes, but overall it will work nicely.
Add full glyphicons
Add polyfill for storage
Add lightswitch for dark/light theming, ref #39

Also includes the wrappers for localStorage to make it easier to use.
Adjust colors of alerts on dark theme, ref #39
Correct alert color and link color, ref #39