MDS-455: signatures are made with microseconds

Signature generator uses timestamp in microseconds instead of seconds
Pass timestamp for signature in hex
Filename is a string from second '/' to the end
Filenames are encoded in upload-output-xml
Merge branch 'feature-mds-454' into development
Version up to 0.78.1
Cdn-cache is not used w/o initialization
Merge branch 'development' into release-0.78
Version up to 0.78.2
Merge branch 'feature-mds-455' into development
Merge branch 'development' into release-0.78
Version up to 0.78.3