Quality of Life

[Kruithne]

This PR implements a number of minor quality-of-life changes.

• The text filtering will persist when changing between texture/model/map tabs, rather than resetting.
• When checking/unchecking the M2/WMO boxes, the filter will no longer reset.
• Textures in the view-port will no longer stretch and instead maintain their original dimensions.
• Added transparent checkboard behind texture view-port to distinguish between transparent and black textures.
• Adjust height of the versioning window to prevent text clipping.
• Added a better default model to the 3D model viewer.
• Camera angle/position will now reset when changing between models.
• Left/right arrows can now be used to strafe on the model viewer.
• Prevent selection events from bubbling, fixing quirks and removing lag when switching tabs.