Stylelint and eslint should be run separately and not part of the build
process.
Add a flag STORJ_DEBUG_BUNDLE_SIZE to debug compiled bundle size.
Reduce the number of chunks, it's far from ideal. Once we reduce the
images and browser size, we probably can drop chunking altogether.
Change-Id: I5bdf35ceb140e2c47a30df8d319606d05bfb30dd
