Replace rides.is_round_trip with rides.type

Move away from a boolean field to an ActiveRecord enum for storing the
ride type. This is in anticipation of adding a vacation type.
Update seed data to use ride type enum
Removed unused portions of bootstrap.
Merge branch 'ride-type-enum'
Merge branch 'bootstrap-cleanup'
Include bootstrap/close

This is the X button on alert messages
Include bootstrap/button-groups

Used in the commute form
Extract presentation logic to helper
Add vacation type

Adds support for logging a commute as a vacation. Vacations have the
same weight as round trips, e.g. 2 points per day.
Add trip type column to user show page
Update rules for vacation handling
Merge branch 'vacation'
Add Tap Root to sponsors
Merge remote-tracking branch 'origin/master' into help

Conflicts:
	app/views/home/rules.html.erb
Make Help page work

Uncomment needed bootstrap classes
Clean up

Standardize naming across menu items. Add indentations.
Fix failing spec.

Update route to point to correct page for tests
Update rules per #81

Slight change in the wording of rule 1 to reflect vacation days.
Use Calendar.today to get current date

Maybe this will fix the timezone related build failures?
Merge branch 'time'