Fix a few issues with the preparation of plugins data, in the admin tab.  - the metadata for plugins in eggs was not properly used  - fix the description shown as "None."
Fix a few issues with the preparation of plugins data, in the admin tab.
 - the metadata for plugins in eggs was not properly used
 - fix the description shown as "None."


git-svn-id: f68c6b3b1dcd5d00a2560c384475aaef3bc99487@6880 af82e41b-90c4-0310-8c96-b1721e28e2e2

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