Add branded icon files to bootstrap

This adds source files for the basic set of icons used in marketing
materials, the three icons used in the console navbar, and two new icons
to represent "roles".

Adds svgmin and grunticon tasks to build these icons into their
representative output files. These are not so important now, but will
provide a basic framework for including provider icons as svgs when that
can be added.
Add janrain logo to icon set to be processed

Run the "janrain-logo" image through svgmin and grunticon so that it can
be accessed the same way as the other icons.
Get rid of that purple

Just becasue it was annoying, get rid of the off-brand purple text in
navbar and the ugly background behind the masteheads. Chose a couple
random pictures to fill the mastheads FPO.
Fix some typos in documentation

Just OCD fixes.
Fix line-height in navbar so it can hold icons

In order to let the navbar hold icons, I bumped the line-height up to
24px and adjusted the padding accordingly. Also set "vertical-align:
middle" default on icons and all navbar elements so that things fall
into place under most circumstances (with 24px icon-sm icons)...
Merge pull request #23 from janrain/thanj/add-icons

Thanj/add icons