Made various changes

[ethorad]

While going through adding stuff from Fantasy Folk: Winged Folk, I spotted a couple of fixes needed in the main library. Plus a couple of things from the FFWF book which could usefully be added to the main part of the library. Will follow up with a separate PR to add in the FFWF stuff.

Full details of changes should be in the separate comment, repeated here just in case:

From Fantasy Folk: Winged Folk

• Limitation "Encumbrance-Limited" on Flight
• "Mitigator: Flight" on Lame
• Added "Strategy (Air)" skill, alongside Land/Sea/Space

General fixes:

• typo on Thamatology Styles, "Cantrip Kindle": tiny flame
• added @specialty@ to the Shapeshift Other spell in Magic
• removed aquatic defaults from the "Survival @Environment@" general skill in the Basic Set
• Added "Survival @Any Land@" and "Survival @Any Aquatic@" skills with the relevant land or aquatic defaults in Basic Set
• Added prerequiste of no language talent to the full price language trait