Increase length of page and collection titles on "Edit access" page

Currently, the title of pages and collections is cut off after only a few characters and the remainder of the title indicated by "...". The cut off happens too early because if you have similar titles, you never know whether you picked the correct page.

Robert and I propose the following:

1. Show the full title of the pages / collections.

2. Because the list can be very long, only show the list of pages / collections that are selected for giving access. This can be one page or that can be multiple pages depending on previous access permission settings.

2. The remaining pages and collections are "hidden" under "More pages" / "More collections" (like the fieldsets we have for "Advanced options") so that you can still reach them, but they don't clutter the page.