fix MODS-Schema (LoC's use of "fixed attributes" is wrong)

Description

Our validating XML parser adds attributes with fixed values from MODS-Schema to imported MODS XML,
e.g. <mods:typeOfResource collection="yes" manuscript="yes" usage="primary">
This is correct behaviour, (W3C definition for fixed attributes), but makes no sense within MODS.
The attributes should be truly optional, therefore it is correct to use a restricted simple type with one value.

Until we get a solution from LoC, we will enhance our local MODS-Schema.

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Assignee

Robert Stephan

Reporter

Robert Stephan

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Priority

Medium
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