updated test suite skeleton for DCJ operations
introduced tests for new attribute "coordinate update" which is a boolean flag, that indicates, if coordinates for particular synteny blocks require an update
adjusted a test for
a) correct logic (line 51)
b) more implicit flag name in update_coordinate method
introduced new attribute for synteny block class "coordinate update"
updated "update_coordinates" method to properly work with "coordinate_update" attribute
initial take on synteny block class documentation
added skeleton for coordinate update
updated index.srt file tree structure to contain only existing parts
merging changes from dev branch