Improve breadcrumb logic through pledge creation

pass a "page" string instead of a page number, and improve the wording
of "Category / Privacy" if we're not actually supporting privacy.
RWBM microsite settings for location/privacy
Make poster.cgi aware of rwbm exception for SMS

This fixes #70, or rather the root reason that ticket was logged:
we don't want the flyers to refer to SMS, as we're not using that
for RBWM.  Instead of disabling the whole feature, we flesh out
the stubbed 'has_sms' function, and the PDF generation routine
already does the right thing here.
Update list of popular social networking sites

Welcome to Web 2.0, please drive carefully.
Replaces #84
Direct /{moderated pledge} access to bogusref
Email templates for moderation

Fixes #66
remove unneeded stylesheets, add blank styles.css for our styles
remove left nav
remove related links
added static breadcrumb. TODO: needs replacing with real paths
header styles - remove some purple, make it look more like RBWM
Remove background image
styled search bar
fix to remove weird vertical space under nav
pledgebank design will now use 100% of available space within rbwm template
tweaked layout and design to make form more prominent
better fix to override specificty breaking the govmetric styles
fix for all forms being broken
tweak to new pledge layout
normalise all the purple boxes