Add LocalPathsInGemfile pre-commit hook

Change-Id: I494e2698481d4afe19c075c1c00426ec23cd5f75
Reviewed-on: http://gerrit.causes.com/37954
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>
Clean up LocalPathsInGemfile

Minor style fixes.

Change-Id: I3ab1b9c7629da696d67e2cb72f163dc070bf9acf
Reviewed-on: http://gerrit.causes.com/37955
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>