[Gameplay A24] - Adjust elephant temlate values.
- Changes the Hero Elephant damage to twice that of Champion Elephants (consistent with other classes).
- Reduces Champion Elephant crush damage resistance to the same of other Champions.
- Give all elephants the same walk speed.
- Removed the bonus vs cav from GAIA elephants.
Patch by: @Nescio
Differential revision: D2853
Reviewed by: @borg-, @wraitii
Comments by: @Feldfeld