remove width and height from repository stats embed tags (#1983, #13486)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11846 e93f8b46-1217-0410-a6f0-8f06a7374b81
increase base height of author lines on 'Commits per author' graph (#14068, #1983)

Contributed by Mischa The Evil.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11847 e93f8b46-1217-0410-a6f0-8f06a7374b81