ESX variable type cleanup
fix for global variables of type short
Fix dangling static references in mShared
Some cleanup
Update the trading offer on "max sale" button click
Make trade window's "max sale" button clickable

The HBox widget above it was stealing the input events.
added variant class
changed global variable records to new variant type
Disable mipmaps generation
Transparency should be evaluated per subentity, not per NIF
Books/scrolls: Fix the take button incorrectly showing
Added BM trees to transparency overrides
Merge remote-tracking branch 'scrawl/book_scroll_fix'
Merge remote-tracking branch 'k1ll/store_segfault_fix'
Use the full unique mesh name for the material instead of the NIF name
Merge remote-tracking branch 'scrawl/master'
Merge remote-tracking branch 'chris/material-fix'
Merge remote-tracking branch 'potatoesmaster/tradewindow'
some cleanup and fixing
use new Variant type for GMSTs