jp2kvolume: better management of glymur versions

See merge request !131

rework Identifier `short_description` function

Closes #69

See merge request !129

volume: single frame: make 6 the default number of digits for the volumes.

Closes #62

See merge request !130

ensure backward compatibility with existing '4 digits' volumes
limitation: if a volume load a 4 digits volume and save it with 6 digits this could end with loading 'twice' the volume if using the same folder.

close #62

rework _dump_frame_dict to overwrite dataset when possible

Closes #61

See merge request !128

remove the scheme and make sure the file / folder name does not exceed 20 characters overwise 'compact' it like
{file_path[:10]}...{file_path[-6:]}

close #61

replace DEFAULT_DATA_DATA_PATH_PATTERN by DEFAULT_DATA_PATH_PATTERN and...

Closes #63

See merge request !127

replace DEFAULT_DATA_DATA_PATH_PATTERN by DEFAULT_DATA_PATH_PATTERN and DEFAULT_METADATA_DATA_PATH_PATTERN by EFAULT_METADATA_PATH_PATTERN. close #63

Clean setup

Closes #65

See merge request !126

replace DEFAULT_DATA_DATA_PATH_PATTERN by DEFAULT_DATA_PATH_PATTERN and DEFAULT_METADATA_DATA_PATH_PATTERN by EFAULT_METADATA_PATH_PATTERN. close #63

# Conflicts:
#	tomoscan/esrf/volume/rawvolume.py

Add vol volume to 1 1

See merge request !124