Builds are now themselves UMD modules, so they could be `require`'d like any
other AMD module or they can still be used as old ES5 modules with globals.
Additionally the build is now closured, so that the almond API doesn't pollute
the global context with `define` or `require`. This does however mean that
`require` can no longer be used outside of the build (unless requirej.s is
included directly.
This change refactors out the plugin code from converse-core into
src/converse-puggable.js
Additionally, plugins now have an optional attribute `optional_dependencies`
which is an array of dependencies which are "nice-to-have" but not essential.
Work has also been done to ensure that a plugins' dependencies are first loaded
before the plugin itself.
Remove interval handler and the user activity handler.
Make sure the connection is reset when logging out.
Also removed the reconnectTimeout, instead debounce the reconnect method by 1 second.
According to the require.js documentation, if you are using "require" in HTML,
then the data-main attribute should not be used.
http://www.requirejs.org/docs/api.html#data-main
So merged main.js into converse.js, which appears to solve the problem.
