[dev] ilCtrl: Plugin Config GUIs no longer work magically

Dear developers,

I recently merged my pull-request (#3710) into trunk, which introduced a static ilCtrl.

What I forgot to mention is that plugin configuration GUIs no longer work "magically" as they did before. Every plugin config GUI now needs an according `@ilCtrl_isCalledBy` statement, that references at least `ilObjComponentSettingsGUI`. Otherwise link-targets to the config GUI can no longer be determined and throw an exception.

Best regards,

-- *Thibeau Fuhrer* Junior Software Developer

*Team ILIAS Core 1* phone +41 31 972 52 30 support-core1@studer-raimann.ch

*studer + raimann ag* IT- and Learning-Solutions Farbweg 9 3400 Burgdorf

main +41 31 972 52 22 studer-raimann.ch