Added "none" option for strike

refs #147
Added ability to delete invoices

refs #146
Linked phone numbers on phone list

refs #131
Changed default member role to General Member

refs #148
Abstracted blackouts out from events into their own objects

Blackouts can be created in two different ways: through the new blackouts controller, and through editing an event. The only way to associate a blackout with an event is to create the blackout through the event. Blackouts not associated with events must have an associated title. Exec and above can manage blackouts. Event TICs are also allowed to manage the blackout period for their events.

The migration that adds blackouts and removes the “blackout” column from the events table creates a blackout period for every eventdate belonging to an event marked blackout. The resulting data represents the same information as in the old system (and will show up similarly in the minicalendars) but is at best a transitory stage—multiple blackouts related to the same event should be consolidated into one blackout period where appropriate.

Also rewrote how the minicalendars are rendered.

refs #132
Fixed bug that would prevent general members from seeing the "Edit event" link even when they had the permission to
Removed a few unnecessary helpers
Fixed minicalendar timezone problems
Fixed minicalendar popups on calendars page when logged in
Fixed schedule link and related info on calendar page not showing up when logged in
Added location buildings to text schedule

refs #149
Updated deploy file for new dev CNAME
Sorted events in minicalendar popups by start time
Fixed event deletion confirmation page
Fixed timezone problems with minicalendars on calendar page
Fixed display of events on minicalendars after DST
Made invoice event field readonly for old events

refs #150
Added rake task to send backup rotation reminder email
Ordered member run positions by event representative date

Previously, the order was chronological by when the run position was assigned.
Fixed /invoices/new

Not that there are any links to it.