jqplot: fix paths to js and css files

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@22789 57a11ea4-9604-0410-9ed3-97b8803252fd
Update to jqplot 1.0.6

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@22790 57a11ea4-9604-0410-9ed3-97b8803252fd
Improve barchart

- drop goffice based chart, only keep jquery one
- move legend outside of plotting area

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@22791 57a11ea4-9604-0410-9ed3-97b8803252fd