prepare web handler tests, many dependencies
Merge remote-tracking branch 'upstream/master' into web_tests
update goconvey deps
test response writer, assume not written header to be 200
extend web test
update test description
do not close ctx log chan, could lead to timing problems
Go tip fails on travis as of now. Will disable temporarily
Merge pull request #77 from wongak/web_tests

Go tip does not compile. Will add it later.