Removing the "CustomTube" mesh that came from jMonkeyEngine 2. Replaced
it with a from-scratch tube mesh that just does what we need it to do
(and also should not have buffer overflow issues).

Signed-off-by: Jordan Deyton <jordan.deyton@gmail.com>
Removed some unnecessary private methods from the new TubeMesh class.

Signed-off-by: Jordan Deyton <deytonjh@ornl.gov>
Merge remote-tracking branch 'origin/master' into dynamic_moose_files

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>