Add customize import/export xml schema/dtd
Customize import/export #2
Customize import/export #3
fix typo
customize export now returns the generated zip file name instead of the ZipArchive object
customize export now formats the gpml file
customize export fix: append <customize-property> nodes too
customize import fix
fix typo
customize importer fixes
customize importer fixes
customize importer fixes
Merge customize-2 into develop

Conflicts:
	module/Customize/languages/customize/en.php
Merge customize-2 into develop

Conflicts:
	module/Customize/languages/customize/en.php
Translations updated
Translations updated
youtube paragraph translations
youtube paragraph translations
"Media" paragraph group removed from translations
zip file validator added
bugfix #362