In particular, this commit actually renders the new custom_php.inc content type plugin useful...up until this commit, it only had 'Unknown contexts' being loaded into it.

#280589 by sun (IMPORTANT): Fix to make comment form compatible with modules that utilize hook_form_alter() on comments.

#279723 by sun: Added 'nodemeta' content type, which flexibly outputs node meta information (author, created time, modified time, title).

Fixed small access error, wherein check_markup() was being called for pane preview rendering without the access check turned on.

Init import of custom_php.inc, which allows users to access panels context data in custom php panes.

content_types callback was missing the 'path' property to where the icon resided, but for some reason, the icon was working anyway. Added the property so that the plugin is compliant with the API, such that it'll continue to work whenever we iron out what's letting it skip 'path'.

#274530 by yoroy, sdboyer: Changed legacy views icons in add content modal so they are immediately differentiable from view panes.

Superimposed 'L' onto the lower-right corner of each icon. We'll likely need to change this in the future when we refactor some of the naming schema, but it's quite adequate for now.

#280419 by sdboyer: Allowed custom content type panes to have their content rendered in the display editor dynamic preview.

Added an editor render callback property that outputs the custom pane's contents, UNLESS it's using a php filter, in which case its outputted through the default filter. See the issue # for rationale.

Updated doxy on the content_types callback so that the developer API reflects the fact that there is a quasi-hook invocation that other modules can use.

#260221 by sun, Pancho. Primarily codestyle cleanup; also fixed some missing leading slashes that were causing the edit icons not to appear in the new helptext for the display editor.

#261797 by Pancho. E_ALL fixes: ensuring that vars are declared as new stdClass() before being used as classless objects. Also some scattered bugfixes here and there.

#223236 by John Morahan. Fixes variable name that was preventing block visibility settings from being used properly

Two changes: Allow $display to be sent to the layout theme, if it exists and fix $nide typo; should have been $node

Add legacy views; also add more administrative exposure to help the user learn where administration is.