Merge pull request #432 from ulisesrmzroche/master

imagemin should not empty files if run repeatedly
templates in pod structure should also compile
Update helpers.js to include grunt-rev
Merge pull request #433 from MajorBreakfast/patch-2

Update helpers.js to include grunt-rev
Remove relative paths

Okay. Let's try again.
Merge pull request #435 from MajorBreakfast/patch-4

Remove relative paths
Remove brittle tests

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