TracBrowser: add two more key bindings:  - 'a' for going to the annotate page  - 'l' for going to the (change) log
TracBrowser: add two more key bindings:
 - 'a' for going to the annotate page
 - 'l' for going to the (change) log

Also fix keyboard navigation to the upper level.


git-svn-id: f68c6b3b1dcd5d00a2560c384475aaef3bc99487@7977 af82e41b-90c4-0310-8c96-b1721e28e2e2

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