It was decided to roll only configuration dates and any date related to user content
such as 'timecreated' , 'timemodified' etc should not be rolled forward.
This patch includes:
* version column removed from modules table, now using standard config, this allows decimal version for modules
* version column removed from block table, now using standard config, this allows decimal version for blocks
* module version.php can safely use $plugins instead of module
* new plugin_manager bulk caching, this should help with MUC performance when logged in as admin
* all missing plugins are now in plugin overview (previously only blocks and modules)
* simplified code and improved coding style
* reworked plugin_manager unit tests - now using real plugins instead of mocks
* unit tests now fail if any plugin does not contain proper version.php file
* allow uninstall of deleted filters
This patch replays the logic of resource_20_migrate() function. If a
file is referred via URL to the course files of the course being
backed up, then such a resource is converted to the File module
(mod/resource) rather than URL module.
During the restore, the section's sequence field is ignored and the
order of modules is controlled by the order of the <contents> activity
elements. This patch makes sure that the modules are listed in that
section in the right order.
Also, the patch removes the obsolete stash sectionidslist which was
introduced when the method get_stash_itemids() had not existed yet.
