Allow addition of media to existing source citations

Missed this from previous update.
Fix for webtrees bug 1076873

sitemap.xml contains empty <urlset> tag
Fix for webtrees bug #1256330

Sitemap ignores privacy settings leading to 404 errors
Fix for webtrees Bug #1249053

Phonetic search by place does not work
Sort list of existing GEDCOM files in import form
Export GEDCOM files using fetch() rather than fetchAll()

To reduce memory requirements
Typo in Extra Info description.
Fix for webtrees Bug #733543

"Edit Name" feature causes loss of 1 NAME tag (Internet Explorer)
Soundex codes in wt_name tabl

Soundex codes in wt_name table have unnecessary (but harmless) quotation
marks
Inline level 1 sources records are not displayed anywhere