Added step bubble code.
Removed original step bar from the toolbar|
Fixed error in which a removed function was called.
Fixed bug in colour editable.
Fixed console output highlighting performance.
Removed requirement to pass in a tree to the message getLoc function
Basic version of StepBubbles
Added step bubble line
Messages on the right of elements.
Revert "Messages on the right of elements."

This reverts commit 159de9c16288dca9fc1948f8e656dbcb4f2fb34e.
Reverted previous commit.
Improved step bubble performance
Improved step bar lock behaviour
Hide step message when showing error step