If unspecified in TracIni, the width and height of the logo won't be specified in the <img> tag either. Fixes #2767.
If unspecified in TracIni, the width and height of the logo won't be specified in the <img> tag either. Fixes #2767.

git-svn-id: f68c6b3b1dcd5d00a2560c384475aaef3bc99487@3388 af82e41b-90c4-0310-8c96-b1721e28e2e2

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