refactor of model/transfers io
test cleanup; travis integration
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/test/java/org/lantern/LanternHttpClientTest.java
rm unused test
travis integration, #537
fix env var names, #537
fix env var names, #537
use env vars w/o checking for props file values, #537
debuggin travis-ci integration, #537
change url in tests (to match old code)
travis ci integration, #537
Merge remote-tracking branch 'origin/master'
fixed visibility on HOST in LanternFeedback (fixes busted tests build)
reencrypting secure env vars, #537
fixed travis secure env var encryption util (use PKCS1); close #537
add ruby travis secure env var encryption util (for good measure)
call start from load() in TestUtils (start xmpp handler)
add important type and use it for new limitation
remove cruft
reset proxied sites button now works differently and is handled on the front-end