style(app:client:coffee) client-side cleanup of .coffee files

[meeDamian]

Changes include:

• redundant parentheses and commas removed,
• .bind(this) replaced with =>,
• added function checks to all callbacks (vel. callback? value); It may be replaced by (callback=angular.noop) -> if that makes more sense(?),
• all cb's renamed to callback (I'd prefer cb, but callback seems more verbose),
• some new lines added to improve readability,
• consistency fixes:
  • .{config,controller,factory,directive,run} now are always consistently in a new line,
  • all method calls are now on the same indentation level as their object.

[DaftMonk]

Could you update the commit message to use the same style you use for the title of this issue?

[meeDamian]

Done :)

[meeDamian]

Apparently changing commit message was enough for travis to be happy again :-)