MenuEdit: Do not use autoconnection mechanism for slots used in QMenu #132
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Currently whenever UI gets loaded and we try to connect a slot with a signal emitted in QAction, for example in appending frame, inserting it, etc. we get warnings like these:
qt.core.qmetaobject.connectslotsbyname: QMetaObject::connectSlotsByName: No matching signal for on_actionAdd_Frame_triggered()
This is because MOC tries to automatically connect functions which have "on_objectname_triggered" signature, and it can't find a matching signal for it by default. So the solution for that is to simply not use the autoconnection mechanism by changing names of those slots, removing "on" prefix from them - this way we won't get those warnings whenever we load certain parts of GUI.