Javascript form validation function.
Possibility to add route suffix builder
(useful when switching language inside contoller page).
PC_core->Get_variable() third argument 'controller' was added.
PC_controller->Get_variable() method was added.
pack.scripts.php includes js files: PC_plugin.*.js from plugin directory,
PC_plugin_pre_all.*.js from plugin directory
(those are being included before any other plugin js files - useful for hooks)
New ext js class PC.ux.crud - used for admin crud operations.
Ext.ux.data.PagingStore bug fixed.
Page tree selector window improved
(possibility to add default controller or default refrence_id)
Restoring few missing files