Add WebDevStudio Custom Meta Boxes

- Add sample functions
- Add cmb2 @ 5476da154677902beacefde35177e616546dc7c7
- Enqueue in functions.php
Add section custom meta boxes to pages
Add front-page.php
Add section partial
Update cmb content id
Get post meta from CMB's to content-section
Add default right aligned section
- Add left-aligned content
- Update conditionals to actually work
- Add a few more selectors content--description, content--wrapper, content--inner
Change class for sections
Change front-page section markup
Refactor .main-section padding values
Check $sections exists, otherwise, show normal page content partials
Change full-width template to support CMB sections