Add the ability to automatically do .inc files for default objects like Views does as well as more powerful version controls.

Allow restricting contexts via access control to allow the add content UI to remove irrelevant content.

Initial commit of content API into ctools. Only one content type is ported, but there are some docs.

Updates to smooth out problems with the new panel page type, remove deleted displays properly and other fun fixes.

Update export to make it more useful for Panels which does not always export in a straightforward manner.

Implement titles; this caused a retooling of the return value of the context task handler rendering so be sure to sync up.

#364167 by drewish: Prevent a broken UI when the number of handlers does not match up to settings on a page.

Allow plugins to have a process callback so they can modify the plugin directly to provide smarter defaults, plus add some more formal documentation in the advanced help.