Bugfix: size set to 0
Bugfix: size set to 0

setting the size in a search to 0 (not None) leads to used size of 10
in the query. This is not what it should do. If the resultset 0 is
wanted it should query it.

jayzeng/pyes,haiwen/pyes,jayzeng/pyes,aparo/pyes,haiwen/pyes,HackLinux/pyes,aparo/pyes,HackLinux/pyes,mavarick/pyes,Fiedzia/pyes,jayzeng/pyes,HackLinux/pyes,Fiedzia/pyes,mavarick/pyes,mavarick/pyes,aparo/pyes,haiwen/pyes,Fiedzia/pyes