Theme and responsiveness fixes (alshedivat#509)

* Dark themed cards

* Responsiveness fixes

* added dark stylesheet option

* highlight theme toggle

* added highlight function

* added highlight themes to assets/css

* offline highlight implementation

* Fixes for masonry

* Revert "added highlight themes to assets/css"

This reverts commit ee7cb76.

* Update `code syntax highlighting` to use jsdelivr CDN

* Project card responsiveness fixes

* added personal website to readme

veedata.github.io

* Reverted responsiveness chnages

* Minor adjustments

Co-authored-by: rohandebsarkar <[email protected]>
Co-authored-by: Maruan Al-Shedivat <[email protected]>

Author: 3 people