Fix #2004 "PDF: Grid rows without visible controls must not take space"

- also adjust use of xsl:copy vs. xsl:element
Fix #2005 "Page number/count loses alignment if form title is too long"
Fix #2006 "Don't let long title wrap in header or footer"
Implement #2007 "Show form logo on PDF header"
Fix #2008 "Textarea content must wrap"
Typo