Feature/raising spending candidate pages

[xtine]

Updates for raising/spending tabs on candidate pages. https://github.com/18F/openFEC-web-app/issues/2087

• Update spending/raising tabs
  • Add sub items
• Show total receipts/disbursements and filter button link

Requires: https://github.com/18F/fec-style/pull/727

[codecov-io]

Codecov Report

Merging #2106 into develop will decrease coverage by 0.05%. The diff coverage is 28.57%.

@@             Coverage Diff             @@
##           develop    #2106      +/-   ##
===========================================
- Coverage    55.14%   55.08%   -0.06%     
===========================================
  Files           48       48              
  Lines         3275     3282       +7     
  Branches       387      387              
===========================================
+ Hits          1806     1808       +2     
- Misses        1453     1458       +5     
  Partials        16       16

Impacted Files	Coverage Δ
openfecwebapp/views.py	41.53% <0%> (-0.65%)	:arrow_down:
openfecwebapp/filters.py	64.38% <40%> (-1.8%)	:arrow_down:

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[noahmanger]

Handed off to me. I just:

• Added these tabs for committee pages
• Used the totals from the two-year period (rather than full cycle) for candidates
• Used the coverage dates as provided by the API response rather than hard-coding

[noahmanger]

@xtine your stuff looks good, so if you can review my commits then we can merge.