Add 'override' method for overriding converse Views and Models.
Merge pull request #276 from gbonvehi/fix-roster-no-route

Fix old roster.js missing route parameter on connect
Use namespace const
Merge branch 'master' of github.com:jcbrand/converse.js
Bugfix. Don't show duplicate messages.
Bugfix. Previous commit didn't take closed chat boxes into consideration
Merge branch 'master' into plugin-api
Refactor the API. updates #46

API methods now consist of simple accessors and mutators that are logically
grouped.
Update changelog
Rename "buddy" to "contact". Fixes #226
Use 'extend' instead of 'override'. updates #46
Merge remote-tracking branch 'upstream/master'