center page headings
added strat/sym routing for screener
screener form elements
routes for screening with or w/o params
screener form submission
screener form styling
moved screener methods to separate controller
run SQL with anorm
get underlier last trade
created twolegs view
set members for TwoLegTrade
added members and abstract methods for two leg trades
added BullCall class
added BearCall class
added abstract methods for key prices
added BearPut class
added BullPut class
added lower/higher strike vals
use lower/higher strike vals in strategy calcs
changed abstract methods to vals