Use wikistream URLs

Already possible, as mentioned in the comments at edsu/wikistream#35
add colored ranges to the gauges (fixes #5)
Merge pull request #7 from waldir/colors

add colored ranges to the gauges (fixes #5)
need to redraw w/ colors too
tweak gauges: better colors, ticks. Also, DRY
Merge pull request #8 from waldir/gauge-tweaks

tweak gauges: better colors, ticks. Also, DRY
Merge pull request #6 from waldir/patch-1

Use wikistream URLs
harmonize whitespace

Using the pattern already present in the file:
2 spaces in script & style blocks,
and 4 spaces in html.
Merge pull request #9 from waldir/patch-1

harmonize whitespace