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

PHP54 compatibility

Petr Skoda authored Jan 15, 2012 and Eloy Lafuente committed Jan 18, 2012

PHP54 compatibility

Also, fix a notice.

New PARAM_COMPONENT, PARAM_AREA and PARAM_PLUGIN + fixing of hopefully all current incorrect parameter types. This should help with diagnosing of incorrectly named 3rd party plugins too.

While doing this, I found various bugs in the manages question types admin page, and so fixed them, and updated the code
there to use $OUTPUT and html_writer.

AMOS BEGIN
 MOV [cannotdeletemissingqtype,admin],[cannotdeletemissingqtype,question]
 MOV [cannotdeleteqtypeinuse,admin],[cannotdeleteqtypeinuse,question]
 MOV [cannotdeleteqtypeneeded,admin],[cannotdeleteqtypeneeded,question]
 MOV [deleteqtypeareyousure,admin],[deleteqtypeareyousure,question]
 MOV [deleteqtypeareyousuremessage,admin],[deleteqtypeareyousuremessage,question]
 MOV [deletingqtype,admin],[deletingqtype,question]
 MOV [numquestions,admin],[numquestions,question]
 MOV [numquestionsandhidden,admin],[numquestionsandhidden,question]
 MOV [qtypedeletefiles,admin],[qtypedeletefiles,question]
 MOV [uninstallqtype,admin],[uninstallqtype,question]
AMOS END