updates related to recent a11y improvements - https://github.com/IgniteUI/igniteui-angular/issues/15962
Add spec for SSR rendering.
Add note on column sizes and min/max constraints
Updated igxGrid Specification (markdown)
Add new Conditional Styling specification
Revert de8951ed861767b7cdb61ae88ae90b041f4aa419...c1ee389a9775135dac3f3a23937a0cac7c376a7d on igxGrid Specification
Revert c1ee389a9775135dac3f3a23937a0cac7c376a7d...101cdd824e0a275d874a2e469245393c9abd3bd8 on igxGrid Specification
Update table
Update grid and paginator specs with updates
'-ed' and '-ing' events change
Update wiki based on new active node changes
remove obsolete `onEditDone` event, add link to editing spec
Add information on new event - onScroll.
Adding header keyboard navigation tests