Patches

• Chore(cron-job): add Quantum deps and basic setup: ed988278ac61dea99a169c1e3b3e7b82ac39afc1
• Refactor(cron): clear cache in midinight & add expire option: 810606765d11e967568fd25d0edc12be6517886f
• Chore(clean-up): wip tags in tests: 062506ec0a8ec59f10774e6d2a6d6177b6f8c7b8
• Chore: merge pull request #169 from coderplanets/cron-job: 115e70dd1f8fb5766a4f7f5201020798fee36749
• Refactor(mailer): add template & fix typo: 49d3dd2d046508b51b9776dea87d22f59fb58304
• Feat(mailer): notify admin user for new content: abeb9ff5f763a45fc3113e7a9c8d1b24c0a161fe
• Chore(clean up): import conventions: 988eed4718d16635230533785b6ba49e34fcf34e
• Refactor(mailer): fix test error & mv send logic to later: 3cc2483307a4e9c71abe66ceb1c2f5341db05cc9