Create a panel similar to Brackets linter panel

@MiguelCastillo Will comment on a few places in code later, but wanted to get this out there for you to review.

Fixes #68.
I *think* that this impacts other places too, but I have yet to look at that. The reason I've done this is because I feel like this sort of concatenation is best done at the place of use - and without this, the formatting for the panel wouldn't work since I do this there:
```
8 ''module' is defined but never used. (W098)    define(function (require, exports, module) {
```