Update the Modern theme for MoinMoin wiki.
    
     - Identity/Webenv/Themes/Default/Moin/1.5.9/Modern.py: Update
       position of search form and page title.
    
       The search form was moved from the heading top-right corner to the
       page content top-right side. The search form isn't visible when you
       are editing a page.
    
       The page title was added to page content top-left side. In the same
       visual line where search form is placed in. Here page title
       controls the way search form is displayed. The page title is
       displayed as a block, while the search form is floating on its
       right.
    
     - Identity/Webenv/Themes/Default/Moin/1.5.9/Modern/css/common.css:
       Don't make form element to display in line. This may create
       distortions when forms are shown inside lists (e.g., ul, li, etc.).
       Don't force all hr to be 1px height. There are hr1, hr2 ... hr6
       classes which purpose is control the horizontal rule height.
    
     - Identity/Webenv/Themes/Default/Moin/1.5.9/Modern/css/screen.css:
       Make user name margin 0 with the intention of saving space on top
       of it. Add some space (5px) between the search form and the edit
       bar elements. This way, the search form seems to be aligned with
       the page title on its left. The `-moz-border-radius' property is
       3px now. Reset the page trail style to fit the previous look on
       heading. Make page location 5px of both top-margin and
       bottom-margin. This helps to keep both page title and search form
       horizontally aligned one another. Add visual styles to reflect the
       fact that hr1..hr6 does exist.
    
     - Identity/Webenv/Themes/Default/Moin/1.5.9/RecentChanges.png: Update
       image to reflect changes described above.