Spending breakdown coverage periods are confusing and limited

[jwchumley]

The time period pull downs on this page are confusing and lacking in coverage. only 2011-2012 and 2015-2016 are on the list. It should be all 2-year periods back to 2007-2008 (as far back as the data supports this kind of breakdown for all the listed committee types). Also it doesn't include the current cycle.

• [ ] make the pulldowns for all candidate and committee options 2-year periods. Include all 2 year periods even for presidential and Senate candidates.
• [ ] add 2017-2018 and make it the default.

[AmyKort]

Issue moved to 18F/fec-cms #1550 via ZenHub