Enforce no Ramp within Loop-EndLoop; Closes #32.

When Loop or EndLoop are selected, and a matching EndLoop/Loop is found,
all internal Ramps are switched to Continue with a dialog warning to
user. Furthermore, Ramp cannot be selected (change to
ModeCol/MenuBuild.vi) within Loop-EndLoop.
Hide Menu bar when SetList running.

Everything is handled with buttons at this point.