added liquid commands to parse page date if coming from a metadata manually given in a page or undefined (use site.time), while still getting date correct for posts
added liquid commands to parse page date if coming from a metadata manually given in a page or undefined (use site.time), while still getting date correct for posts

cboettig/2013,cboettig/2011,cboettig/2013,cboettig/2008,cboettig/2011,cboettig/2011,cboettig/2013,cboettig/2013,cboettig/2009,cboettig/2009,cboettig/2010,cboettig/2011,cboettig/2010,cboettig/2010,cboettig/2010,cboettig/2011,cboettig/2008,cboettig/2009,cboettig/2013,cboettig/2008,cboettig/2009,cboettig/2009,cboettig/2011,cboettig/2013,cboettig/2010,cboettig/2010