Make redshift grid consistent

[raphaelshirley]

Bug report

lephare defines the redshift grid in the config para file. RAIL additionally specifies the grid via stage params. Shall I overwrite the config values so that the grid can be set through RAIL params? Presently rail_lephare is using the values in the config file which could be inconsistent.

@aimalz What do you think?

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[aimalz]

Good catch! It would be best for users to specify this kind of thing when creating the stage. That's probably true for everything in the config file; ideally, the config file could be written by the stage to which its parameters are provided so RAIL users could run LePhare without a separate config outside of RAIL stage arguments. Does that make sense?

[raphaelshirley]

Yes definitely makes sense I will overwrite the lephare config and think about warning the user.