Moving to xml rather than gz for comparison purposes

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21096 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
Bring data.gramps up to date with version 1.5.0 of XML; fix missing citations

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21097 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
Set of changes to allow merge/patch functionality: feature on db to not add sources or tags on import; all gen.lib objects' to_struct marks Handles rather than strings; Differences report (gramps-add) now shows all relevant changes

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21098 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6288: crash: no attribute 'require_version'


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21100 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
http://www.gramps-project.org/bugs/view.php?id=2623#c26969 make handle safe

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21101 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
Improvement to dropdown navigation plugin

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21102 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
indent typo

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21103 4ae1f11a-8b86-4847-b8af-ab372f36d1fd