fix initializeApplication in pluginmanager (from axel dtk clone)
fix initializeApplication in pluginmanager (from axel dtk clone)

rdebroiz/dtk,NicolasSchnitzler/dtk,d-tk/dtk,rdebroiz/dtk,NicolasSchnitzler/dtk,d-tk/dtk,d-tk/dtk,rdebroiz/dtk,NicolasSchnitzler/dtk,d-tk/dtk,d-tk/dtk,d-tk/dtk,NicolasSchnitzler/dtk,rdebroiz/dtk