Some cosmetic enhancements for the About page:  * empty sections in TracIni are skipped (they were not displayed properly anyway)  * component descriptions are wiki-fied
Some cosmetic enhancements for the About page:
 * empty sections in TracIni are skipped (they were not displayed properly anyway)
 * component descriptions are wiki-fied

git-svn-id: eda3d06fcef731589ace1b284159cead3416df9b@1890 af82e41b-90c4-0310-8c96-b1721e28e2e2

walty8/trac,walty8/trac,jun66j5/trac-ja,walty8/trac,netjunki/trac-Pygit2,jun66j5/trac-ja,jun66j5/trac-ja,netjunki/trac-Pygit2,jun66j5/trac-ja,netjunki/trac-Pygit2,walty8/trac