- simple avg in utils
- solved minor bug in typeduidmanager
- fixed editorguiarraydrawer code conditional compilation
- HIGHLY improved activities system; added entry point by specifying the name of startactivity class in Worker's inspector; now canvases are prefabs and activities make their own instances (appending "#<index>" to their names); improved implementation of the three trasaction types flow; improved activity lifecycle callbacks flow; marked OnDefineView as virtual, instead of abstract, so the manager will search for a canvas with the same name as activity's one and instantiates it (if not found, it instantiates an empty one, but with the respective name)