The redraw function was changed to return a list [dist, ang] if the real argument is not True. With this list the action function 'knows' which units to display. This also made it possible to move the "self.ui." related stuff that was in the redraw function to the the action function.
I have also changed to tooltip texts by removing the article "The". This more in keeping with other tooltips.
LGTM is concerned about the unused loop variable in this algorithm.
While there was nothing wrong here, to eliminate the alarm the loop was
removed entirely, since Python allows the use of the multiplication
operator here to achieve the same effect.
In Python 3 `super()` can be used without an argument
in order to get the parent class, `super()`.
In Python 2 the present class must be used as an argument,
`super(ThisClass, self)`.
This commit is done to support Python 2,
as without it all Gui Command tools will be broken
and will fail to launch, even if the unit tests pass.
Also, set the `__metaclass__` variable to `type`.
This is done to turn all classes into "new style" classes
in Python 2. This is required so `super()` works correctly
in this version of Pyton.
This commit can be reverted once Python 2 support
is completely dropped, and only Python 3 compatible code
is used.
