Added new icons for area based tools
Added skeleton of new tool to move polygon node to achieve desired area
added vertex selection tool
Added UI for node moving by area tool
modified makefile
rename UI main widget
imported UI module
typo fix
Added Dialog for new tool
Added reference to dialog
Connected vertex selection tool, GUI and Toolbox button
Capturing selected geometry and selected vertices ready
GUI now showing selected polygon area
Added checks for valid selection of points
Added back title to fix error
enabled text input
reading new area from UI
move vertex function contributed by Chiossif
find third point next to node moving
creating new geometry and testing results