Fixed #2241967: Invalid preferred services on form validation.
Added bubble style setup.
Changes for #1348502: Adding bubble and pill style.
Merge branch '7.x-4.x' into issues/2241967-preferred-services
Fixed #2241967: Preferred services did not validate.
Fixed issue #1989152 by matglas86, labue, juampy: Allow alterations to 'addthis_share' variable in 'addthis_configuration' alter hook.
Fixed issue #2206515 by matglas86, dubois: Add configuration 'services_excluded' (globally excluded services) to AddThis Basic Settings.
Revert "Fixed issue #2206515 by matglas86, dubois: Add configuration 'services_excluded' (globally excluded services) to AddThis Basic Settings."

This reverts commit 273073903a7e15cfda0d8c344636982b7dac6a77.
Fixed issue #2206515 by matglas86, dubois: Add configuration 'services_excluded' (globally excluded services) to AddThis Basic Settings.
Merge branch '7.x-4.x' into issues/2233585-uncaught-typeerror
Fixed issue #2233585 by matglas86, mstef: Uncaught TypeError: Object #<Object> has no method 'ready' .
Merge branch '7.x-4.x' into issues/2233585-uncaught-typeerror