Fixed #1686. Compatibility measures to be removed later, when format changes become to big.

git-svn-id: http://svn.code.sf.net/p/vcmi/code/trunk/@3731 4dfc6b2a-8b31-0410-aa91-d6c70e3ac834
Possibility to switch autoskip in the runtime.

git-svn-id: http://svn.code.sf.net/p/vcmi/code/trunk/@3732 4dfc6b2a-8b31-0410-aa91-d6c70e3ac834