Smooth out >255 plugin support

It turns out that in updating XEditLib to x64, I made it so loading >255 plugins works.  There are just a few things that need to be smoothed out:

1. Fix sorting of plugin files on the tree view. ✔
2. Fix FormID display? (would require displaying 9+ characters on larger formIDs) ✔
3. Fix API functions (GetFormID, SetFormID, GetRecord, and path resolution)