New features

# add IE support
# add new experimental submodule

- Issue #2950384 by Dana Yousef, m.abdulqader: Add more regions to lighthouse layout.
- Added new patch to paragraph module: Support translatable paragraph entity reference revision field.
- Revert "Issue #2950384 by Dana Yousef, m.abdulqader: Add more regions to lighthouse layout".
- Issue #2950384 by Dana Yousef, mqanneh, m.abdulqader: Add more regions to lighthouse layout.
- Overrided system "details.html.twig" template file and moved description to the end.
- Issue #2950914 by mqanneh: Load frontend theme stylesheet into ckeditor.

• Add README.txt content
• Adding hook_help
• Saving should not be done in set functions
• Changed the description of the settings form element (column prefix)
• Fixed issue with hover button states on small columns
• On big enough columns the edit column button is now expanded by default
• Added partial fix for #2950386: Order the layout list on category

Fixes issues:

• #2946392: Setup basic key in the output when installed
• #2948693: Coding standard

Initial Release.

Add Social Connect block.
Fixed few bugs.