fix (almost) all tslint errors

[keforbes]

I installed the tslint plugin for my IDE and found there were a bunch of tslint errors in Oni. I decided to go through and fix them all. Well, almost. All of the UI components have a require("./xxx.less") line which tslint doesn't like but I don't know how to change a less file to an import statement so I left those alone.

If you don't actually care about tslint errors or you haven't really configured the tslint.json to your liking then you can delete this Pull Request. I just figured it was an easy fix.

[bryphe]

Thanks for making these @keforbes , appreciate it! Hopefully once #56 is here these will be discoverable inside ONI as well. The change looks good overall, but it seems like there is a compile error in the typescript plugin - I'll approve it and merge once that's fixed.

[bryphe]

Looks like the object-key-literal-quotes rule is causing problems in tslint, which was just fixed recently:
palantir/tslint#1916

I'll ignore the rule for now until we can pull the fix in

[bryphe]

Finished this up in PR #133 - thanks!