Implement threat model report

[codecov[bot]]

Codecov Report

Merging #100 into master will decrease coverage by 0.47%. The diff coverage is 90%.

@@            Coverage Diff             @@
##           master     #100      +/-   ##
==========================================
- Coverage    98.4%   97.93%   -0.48%     
==========================================
  Files          24       25       +1     
  Lines         502      532      +30     
  Branches       29       29              
==========================================
+ Hits          494      521      +27     
- Misses          8       11       +3

Impacted Files	Coverage Δ
td.tests/clientspec/test.js	100% <ø> (ø)	:arrow_up:
td/public/app/config.route.js	100% <ø> (ø)	:arrow_up:
td/public/app/threatmodels/index.js	100% <100%> (ø)	:arrow_up:
td/public/app/threatmodels/webreport.js	89.28% <89.28%> (ø)

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[mike-goodwin]

implements issue #51