Cycle select update

[noahmanger]

Based on #351, I wanted to come up with a better, more consistent place for the cycle select. So this patch does just that. @jenniferthibault can you review to make sure this captures what we discussed yesterday?

There are now cycle selects on any tab where you can control the cycle (so everything except "Filings"), and changing one changes them all.

Also: I moved the logic on the Candidates and Committees page so that even if there's no records, you still see the "financial summary" section heading and explanatory text.

To do: Once we have persistent tab URLs, you'll no longer be bumped to the first tab upon changing the select on the second or third tab.

[jenniferthibault]

Yup! This looks like what we talked about to me!
One thing, and apologies if this is late in the game to bring it up, I'm not sure how much of a PITA it will be.

I'd like to be sure that any time we are showing a range of numbers or a range of dates, we use an en-dash without surrounding spaces to separate them instead of a hyphen. An en-dash is typed on a Mac by holding option+- and releasing. On Windows, it's Alt+ 0``1``5``1 and release. En dashes are used exclusively for date and numerical ranges.

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Examples
Hyphen with spaces: 2012 - 2013, $100 - $500
En dash without spaces: 2012–2013, $100–$500