Merge pull request #3 from fredpook/fix-anymeta-compatibility

Fixed anymeta compatibility for anyMeta 4.14 and later - use tag 'wow' for older anymeta versions.
Merge pull request #4 from fredpook/fix-skip-empty

fixed skipping things with unknown kind or empty lang text
temporary workaround for media from url instead of exported blob
cleanuo tabs
handle file download from url
Merge pull request #5 from fredpook/fix-file-noblob

Temporary workaround for media that are not exported as blob but by url
fixed geo lat/long import
Merge pull request #6 from fredpook/fix-geo-import

fixed geo lat/long import
Remove copypaste default value from admin input form
Add mod_import_anymeta:test/1 plus JSON files

Change unique identifier uuid to rsc_uri.
Move tests into own file; add imported edge order
Do not let importer create extra edges for kind and type.
Make the default kind->category mapping in sync with recent Anymeta vsn
Write some initial assertions
Add more assertions
Fix merge issue
Fix 401 error and change GUI to explain the 'secret'
Update README to explain testing
Fix anymeta id conversion to integer (for new epgsql driver)
z_string:to_lower/1 will start returning binaries with 0.11.