Fyst 133 state code from intake first

[jenny-heath]

Link to pivotal/JIRA issue

Is PM acceptance required?

• No

What was done?

• added method to state file questions controller current_state_code which first tries to get US state from current_intake and, if not there, checks params
• replace all uses of params[:us_state] that A) should be checking the intake first and B) have access to the helper method
• replace some lines where display name of state is derived from States or whatever and instead use state_name helper from questions controller
• rename some local variables so they don't show up in search for state_code

How to test?

• One added test for the helper method
• The goal is for it to work the same so if all the tests pass we should (should) be good

[github-actions]

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