Added min_fave_date and max_fave_date to flickcurl_favorites_getList

(flickcurl_favorites_getList2, flickcurl_favorites_getList2_params): Added
based on older methods but with min_fave_date and max_fave_date
arguments added.

(flickcurl_favorites_getList): Deprecated for
flickcurl_favorites_getList2

(flickcurl_favorites_getList_params): Deprecated for
flickcurl_favorites_getList2_params