removed unused mei test files
added DC test files
removed unused method
working on class prototypes
more work on class prototype; test page
removed some debug logs
viewer works as a prototype

test to create two viewer instances
removed debug logging
display first page of second viewer
refactor styling
better layout handling

(still some TODOs)
removed debug logs
ignore <rdg>s without source attribute
include meitovexflow source rather than min
test case to display canonical DC files
removed history handling
reorganised folders

Now the test folder contain the sample applications;
renamed files to override deprecated code
Merge branch 'master' into DCfiles
use meitovexflow sources