improve handling of bliss proposal file.

See merge request !85

bliss proposal file are master files with External links to sample file that are the one "targetted by nxtomomill".

With those modification this should be transparent and we should have the same result by casting one file or the other.

[patch-nx] add an option to convert automatically all frame of a given type...

Closes #82

See merge request !84

[patch-nx] add an option to convert automatically all frame of a given type (dark, flat, projection...)

close #82

[h52nx] rename some remaining `ref_titles` to `flat_titles`.

See merge request !83

Insure backward compatibility by adding aliases for the `flat_titles` key.

benefit from validator and improve tests

See merge request !81

replace several `create_ini_ref` and `create_final_ref` by `create_ini_flat` and `create_final_dark`

edf2nx: fix issues with the progress.

See merge request !80

flat and projections can be write `interlace` and reseting the progress was a mess.
Simply avoid reseting the progress and only update advancement when write projection.

edfconverter: improve file closing management

Closes #80

See merge request !79

[h52nx] create a dedicated EXTRA_PARAMS_ENERGY_DEFAULT_VALID_KEYS for the documentation of the 'extra params' in the configuration file

h52nx: rename keys for extra parameters when provided by the configuration file

See merge request !78

- add unit to the default name.
- insure backward compatibility by allowing some aliases.

[h52nx][configuration] add  to the EXTRA_PARAMS_ENERGY_VALID_KEYS. Allows to display it on the documentation when .cfg is generated

general improvement

See merge request !76

[app][dxfile2nx] allow to provide pixel size as a single value

Closes #66

See merge request !77

close #66