Bug Fixes / Tweaks

• Fixed a bug where refreshing lists would cause a freeze when Ui elements were inactive (when using search for instance).
  Units can now be made invisible with the "eye" button in Unit settings panel - grillage and other attachments will still be visible.
• Fixed a bug where a unit COG would not properly be set to half-height of the unit when using "Reset COG" button.
• Upped Array size limit to 30 in each direction. Fair warning: setting all directions to 30 will create 30 x 30 x 30 copies which might be too much for Deckplanner.
• Decklayout Generation should now display the correct values in tables.
• Point snapping now works on stacked containers.
• Doors can now be added as both right and left single doors.
• Generating seafastening report should now only consider units in the current unit set.