JWT for simulated in-app product (bug 1046849)
Attempt to fix tests
Merge pull request #2365 from kumar303/sim-jwt

JWT for simulated in-app product (bug 1046849)
add 32px icon for feed webapp serializer for transonic
Updated queries for elasticsearch 1.0+ (bug 1041709)

This mostly updates our queries to stop using the now deprecated
`_boost` field and instead use function score queries.
Updated docs to install a newer Elasticsearch version
Updated feed query to use field value factor instead of script
super refactor and add tests for FeedElementSearchView
Merge pull request #2369 from ngokevin/feedsearch2

optimize FeedElementSearchView
fix some es tests
recent feed element listing view (bug 1045941)
add in pngcrush on travis (bug travis-fixin)
Merge pull request #2371 from andymckay/travis-fixin

add in pngcrush on travis (bug travis-fixin)
use the mkt pagination facilities for feed list view
remove outdated scripts