Added emendation DC test files

… and regrouped test cases in transform_test.py
handling emendation equals handling variants
added test for not legally overlap with lemma
moved test for multiple color blocks to new test case .mei
moved variant and emendation handling methods to alt.py
added test for master plain MEI
introduced ANYCOLOR
cleanup
redesigned get_colored_blocks_from_notes() to retreive all blocks if more is present
don't repplace longa in short tests
treatment of color encoding

added color BLUE
added test for treament of color encoding

renamed test 'all-in-one'
ignore .log files
fixed: nested staffGrp causes analysis to fail
Fixed: lower case emendation isn't recognised when analysing staff roles
fixed a broken reference to media folder
added another reconstruction staff to test 'All-in-one'
Automatic staff type assignment on metadata page
ignore uploaded files
removed uploaded file