update styling according to Google styleguide

[ankit-m]

This updates curly braces and indentation styling according to Google style guide in all the js files in source.

Because of implicit semicolon insertion, always start your curly braces on the same line as whatever they're opening.

if (something) {
  // ...
} else {
  // ...
}

Multiline array initializers and object initializers are indented 2 spaces

It also fixes missing semicolons and replaces != with !== wherever required i.e. comparing with zeroes and null.

Improves javascript style #60

[ceilican]

@ankit-m , thank you for that! It looks good! Could you make the pull request automatically mergeable, so that I can merge it more easily?

[ankit-m]

@Ceilican I have made the branch automatically mergeable. There were some new commits which caused the conflicts. I have fixed those.

[ceilican]

Thank you!