Fix events iCalendar file (#63)

The gem we use for generating the iCal file does not handle
ActiveRecord's DateTime class properly (it has its own custom one, I
imagine). Apparently, you can pass it a pre-formatted string, which is
what I did to bypass this issue. If there is a better way to do this, I
am open to using it, but this works for now.
Merge branch 'clean-up'

Conflicts:
	app/models/event.rb

Conflicts have been resolved (crisis averted). Merge looks good to me.

Signed-off-by: Kristofer Rye <kristofer.rye@gmail.com>
Fix time zone issues (#63 again)
Hide the db.sql file
Updates to the gems.
Attempted fixes to the Facebook plugin.

Considering that this is the latest code from Facebook regarding how to
get a "like" button and it is still throwing these errors, this is a
Facebook-side problem that needs to be fixed on their end.