Cleanup rbtools.utils.aliases
Cleanup rbtools.utils.aliases

The `rbtools.utils.aliases` module now correctly uses unicode literals
and single quoted strings.

Testing Done:
Ran unit tests.

Ran an alias. It executed correctly.

Reviewed at https://reviews.reviewboard.org/r/7233/

beol/rbtools,haosdent/rbtools,beol/rbtools,davidt/rbtools,reviewboard/rbtools,haosdent/rbtools,reviewboard/rbtools,datjwu/rbtools,datjwu/rbtools,datjwu/rbtools,haosdent/rbtools,davidt/rbtools,beol/rbtools,reviewboard/rbtools,davidt/rbtools