Webmake

-----
- Bugfix: Copyfiles module now checks directory modification times for changes as well
(i.e. handle added files correctly.)
- Bugfix: Browserify Node Modules command now correctly detects dependencies of
libs inside node_modules.

-----
- Bugfix: Updated NPM dependencies for babel.

-----
- Bugfix: Concatenate & minify plugins create destination dirs as needed.

-----
- Bugfix: When concatenating files in debug mode, write the paths below
each file contents instead of above to prevent mangling any source
map in the first file.

-----
- Bugfix: Fixed crashing npm install on linux due to --no-bin-links
- Bugfix: Prevent bdist_wheel from running automatically by pip as
npm doesn't support moving its installation around.

-----
- **NOTE:** Breaks backwards compatibility!
- Upgrade all compiler tools to latest versions.
- Update `uglify-js` with `uglify-es`.
- Removed standalone React.js compiler.
- Removed reactify plugin to Browserify.
- Added babelify plugin to Browserify, with ES2015 and React JSX support activated.
- Updated test project with support for latest React.js.