fix(embed): make tabs in colorbox popup usable

Function embed_select_tab expects input page to be set, but it isn't.
Adding a
´´´
set_input('page', $page[1]);
´´´
to the embed_page_handler function fixes this

Refs: Issue #6357
fix(groups): displays correct group content access options for each content access mode

Content access options for public groups:
 - Private
 - Logged in users
 - Public
 - Members of the group

Content access options for groups using members-only policy:
 - Private
 - Members of the group

Refs #6142
Merge pull request #6393 from juho-jaakkola/group_access_settings

Display correct access options for group content
Merge pull request #6363 from slyhne/patch-6

fix(embed): make tabs in colorbox popup usable
fix(events): makes the plugin_id parameter reliable for plugin events

Some plugin methods trigger events which include a "plugin_id" parameter.
In some cases this parameter was unavailable. This makes sure it's always
available.
Merge pull request #6341 from mrclay/fix_plugin_event

Makes the plugin_id parameter reliable for plugin events
Merge pull request #2 from Elgg/master

同步更新