Switch to radio buttons for pledge

Some bugs yet, and needs cosmetics
Defaults work.
Tweaks to radio pledge, logging
Switch to radio buttons for pledge

Some bugs yet, and needs cosmetics
Defaults work.
Tweaks to radio pledge, logging
rebasing (attempting for first time) the radio stuff up to newer master
Merge branch 'radio' of github.com:dlthomas/snowdrift into radio

Conflicts:
	Model/Shares.hs
fixed merge errors I missed before
Squishy JS for share radio buttons.
Merge github.com:dlthomas/snowdrift

Conflicts:
	config/models
fix devDB.sql
more clear pledge form and wording, and moved to top above history and
stats
drop manual_establishment before creating it
adjusted pledge form further, more clear test message