timeline: Made the author filter case-insensitive.
timeline: Made the author filter case-insensitive.

Thanks to Mark Mc Mahon for the patch. Closes #9167.


git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@9399 af82e41b-90c4-0310-8c96-b1721e28e2e2

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