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.
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.
Strophe.ping.js was still in the no-dependencies build
Also clean up wrapper-end.js a bit as well as the grouping of dependencies in
non_amd.html
Remove locales from utils.js and include it in converse.js so that the locales
can more easily be removed from the build.
