Enable AmbiguousRegexpLiteral cop

Change-Id: If27e20ad415e76b64ef47071606602b16bf64bcf
Reviewed-on: http://gerrit.causes.com/37610
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>
Enable GuardClause cop

Change-Id: I03f6b165e11000db607fc9e1d42048f94887e878
Reviewed-on: http://gerrit.causes.com/37611
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>