Enable `AttachmentModule` tests which were apparently disabled by accident. Fixed them up, but the fixes don't seem entirely right. (Christian, can you please look into fixing these tests properly?)
Enable `AttachmentModule` tests which were apparently disabled by accident. Fixed them up, but the fixes don't seem entirely right. (Christian, can you please look into fixing these tests properly?)

git-svn-id: f68c6b3b1dcd5d00a2560c384475aaef3bc99487@4333 af82e41b-90c4-0310-8c96-b1721e28e2e2

dafrito/trac-mirror,moreati/trac-gitsvn,exocad/exotrac,exocad/exotrac,moreati/trac-gitsvn,moreati/trac-gitsvn,dokipen/trac,dafrito/trac-mirror,exocad/exotrac,exocad/exotrac,dafrito/trac-mirror,dokipen/trac,dokipen/trac,dafrito/trac-mirror,moreati/trac-gitsvn