ToolContextual: Working out the kinks.
ToolContextual: More bugfixes
ToolContextual: Simplified logic for add/toggle/remove
ToolContextual: Increased selection box opacity
ToolContextual: When zoomed out, the selection rect is a bit thinner
EditorStyle: Added colours for selected+highlighted state
Graphic: Updated to use new colour states
ToolHighlighter: No longer makes permanent changes to graphics objects
ToolHighlighter: Deduplication
Selection: Minor changes
Camera: made zoomIn/Out final
EditorPanel: Removed redundant import
Merge branch 'EditorPanelDev'