FMod - v2.7

Today I continued making small changes to Abiathar in preparation for the release of v2.7:

• Dragging the middle mouse button no longer allows scrolling outside the level when "Allow scrolling outside level borders" is disabled.
• The Tile Property Modifier now displays a much more obvious (modal) warning about read-only tileinfo.
• Closing the dependency file now does a much better job of cleaning up the view state. (For instance, TilesetOffsetY and ShowTileset are now zeroed.)
• The Resource Accountant's hotkey was changed to Ctrl+U to be distinct from the Tile Property's hotkey of Ctrl+P.
• The code responsible for refocusing the Tile Property Modifier when the selected tile is changed in the level now prevents a tile not visible in the tileset from becoming the focus of the TPM, which could have caused crashes and data corruption.

I released all this as v2.7, then soon noticed that I had created a visual bug in the foreground tileset when Infoplane Override is in use. Oops. v2.7.1 was released as I was writing this.