Meribook v5.10.0 update: Back end improvements and minor bug fixes

This release was more focused on Meribook backend integrations with some minor bug fixes.

◙ Thrivecart for Meribook subscription

◙ Improve outgoing email template

◙ Update copy clipboard for code copy

◙ Improve email delivery

◙ Expire account email change request and few more minor updates

Bug fixes include:

◙ Fix share count display

◙ Fix iPad view of main pages

◙ Fix notification email not received