Move all sanitization operations from PK* and SAV* to PKX; add general
method for fetching a generation specific string
Changes the Text subform editor to show trash bytes when appropriate.
Special characters to be shown can be easily inserted in the future.
Add ability to get SeenCount & CaughtCount
switch gen1/2/3 get/set to use int species (since that's all they end up
using), removes the need to create a pk6 template for setting the flag
via the dex editor.
Simplify checksum code (-50 lines)
set the bitflag on set, and clear on clear; don't clear and re-set if
setting.
Remove ToArray in favor of getData array fetch.
Fix blank sav creation for gens 1-3 (data vs Data references, version
overrides)
Fix main form init with gen2 first (check for altform usage like all
other gens)
Use GameVersion specific blank fetch instead of generation ID
Existing code supported 3-x, wasn't updated for gen1/2.
Allows gens1/2 to override to their own gen format filter, and allows
gen7 to allow finding of pk1 files (not yet converted).
Noticed the backup would overwrite an existing backup; thus we only back
up if the target file exists AND the backup doesn't already exist.
