chore(package.json): upgrade `gulp-jscs` to v1.1.0
chore(package.json): add `merge-streams` dependency

Needed for gulp-jscs task which needs a separate config for tests, to have slightly more lenient
linting rules.
chore(.jscsrc): add .jscsrc for test suite
chore(.jscsrc): don't require curlies for if() statements

Normally, I would like to require curlies for if() statements, but I'll catch these during review.

For simple return-statements, I don't want to require curlies, as it makes the code bigger.
chore(.jscsrc): don't validate JSDoc

dgeni does this for us, we aren't using it yet but that's the plan.
chore(.jscsrc): don't require curlies for case/default statements
chore(.jscsrc): don't require space after 'catch' keyword (catch(e) is nice)
chore(*): fix style

Now linting a bunch of things that weren't being linted before, big adjustments
chore(*): use "`" quote instead of "\'" in string literals