public static List<org.eclipse.core.runtime.IConfigurationElement> getPages(org.eclipse.core.runtime.IConfigurationElement input)
This method gets an input array of MEEditor pages and performs the tasks "after" and "replace" on them. That
means, pages replaced by others will be omitted and pages with the after attribute set to a valid page name will
be sorted so they appear after that page. If a page that has elements "after" it is replaced, the elements will
instead be after the replacing page.
input - A list of MEEditor page candidates (directly from reading the extensions for the pages extension
A properly ordered list of all pages to be added to the MEEditor.