Allow CORS in development mode

Easy Chrome
add angular support for travis
sync upstream
minor formatting
fix dev CORS bug
add addtional cors headers
Merge remote-tracking branch 'upstream/master'
use official flask-admin
add npm dependency installation
fix flask-admin wtfomrs error
Merge pull request #24 from blurrcat/master

Allow cross origin requests in development
Merge commit 'd5d6a9dfd501053a14ac11f8915ccbcc736810f9' into pullrequests/misfit
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