Merge pull request #171 from bhattigurjot/master

corrects the selection of circle and line
connects cut/copy/paste from edit menu
corrects height of menubar
Merge pull request #172 from ChanKaur/chan

connects cut/copy paste from edit menu
enables selection/moving for image entity
Merge pull request #173 from kamalpreetgrewal/master

enables selection/moving for image entity
sets option variable for all entities and cleans code
Merge pull request #174 from kamalpreetgrewal/master

sets option variable for all entities and cleans code