Enable COmment submission via NESTED ROUTE  - ch 33
Enable COMMENT displays on PLACE details page  - ch 34
Change Ratings to DROPDOWN and INVERT dB  - ch 35
Make Comments MODAL  - ch 36
Styling the Comments  - ch 37
Show Latest Comment for EACH of PLACE on Home page  - ch 38
Email basics  - ch 40
Enable Email sending from gmail  - ch 41