added table tags to the default allowed tags for ActionView#SanitizeHelper
added table tags to the default allowed tags for ActionView#SanitizeHelper

hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers