Revert the `WikiPage()` constructor to use the ''name'' named argument in order to stay compatible with plugins that might rely on it (like SpamFilter does).
Revert the `WikiPage()` constructor to use the ''name'' named argument in order to stay compatible with plugins that might rely on it (like SpamFilter does).

Fixes #6477.

git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@6309 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac