for rails 3.1, disable xml. should be removed when merged with rails 3.2
CRYPTOPROVIDER environment variable (e.g. BCrypt). added Bace. closes gh-338
group admin can determine how/whether account balance displayed. closes gh-336
admin can specify custom logout url. closes gh-318
message is a string not an activerecord object or id. closes gh-339
Merge remote-tracking branch 'upstream/master'

Conflicts:
	config/initializers/rails_admin.rb
	db/schema.rb
Merge remote-tracking branch 'upstream/rails329'
updating schema