Changed bookmark title character conversion

git-svn-id: http://devserv/svn/fluxdvd/components/wxPDFView/trunk@8121 ee4118f4-65c3-8c42-83c6-dbb17464b6b1
Determine current visible pages when scrolling/zooming/resizing for more accurate current page and in preparation for smart render cache

git-svn-id: http://devserv/svn/fluxdvd/components/wxPDFView/trunk@8122 ee4118f4-65c3-8c42-83c6-dbb17464b6b1
Fixed vertical scroll height

git-svn-id: http://devserv/svn/fluxdvd/components/wxPDFView/trunk@8123 ee4118f4-65c3-8c42-83c6-dbb17464b6b1