Revert "Bug 1027707 - Replace the existing module loading facilities in calendar r=millermedeiros"

This reverts commit abf72f5e6259e4c2c5c744b603931f89ef4512c4.
Bug 1076454 - Disable intermittent failing test, TEST-UNEXPECTED-FAIL | /builds/slave/test/gaia/apps/system/test/marionette/browser_chrome_share_web_result_test.js | Browser Chrome - Share Web Result share web result via e-mail r=kgrandon
Bug 1073082 - Taskcluster decision tasks r=kgrandon