Issue #1884802 by jpontani: registration on another site will now disable registration onsite, will also not require an external URL to be entered

Issue #1866718 and #1883396 by jpontani: re-export events feature with proper panelizer display to show event node; max attendees field is an integer field

Issue #1872444 by jpontani: have # of attendees and comments on group pane for upcoming events rather than event location

by jpontani: remove view page display when events_solr module is enabled, and main-menu link will go to solr page; when events_solr is disabled, view page display is added back so events link will go to view instead

by jpontani: automatically follow event node when user registers to attend; support dynamic faceting in events_solr

Initial commit towards issue #1860344: Add content creation widget to 'all' tab of group browsing widget

by jpontani: events you created pane was using a relationship instead of a contextual filter, so was showing wrong data, that is now fixed

by jpontani: re-export main feature with added permissions, view panes, registration field settings; added Solr events search feature with faceted page

Issue #1855466 by jpontani: create a content pane for events within a group; change group block to use relationship for OG

Issue #1811570 by ezra-g: Fixed Commons events views_view() component is overidden on a fresh install.

Issue #1812588 by jpontani: switch from pixel width to em width for better flexibility on screen resolutions