Code Style Improvements

There's probably certain things which fell through the cracks, and several areas which I'm also not certain of @mrdoob's preferences. Nevertheless, first round attempt to code transform codebase mrdoob style using codepainter with some sed commands.


```sh
git reset --hard
codepainter xform -j ../utils/codestyle/mrdoob_codepainter.json  "*/*.js"
find ./ -type f -exec sed -i -e 's/( )/()/g;s/\[ \]/[]/g;s#{[ ]}#\{\}#g' {} \;
find . -name "*.js-e*" -print0 | xargs -0 rm
git add -p
```

See #4802 
cc. @WestLangley