allow preset filters and related schemas for cloud

This refactors the cloud aggregation to make use of the
SearchSQLBuilder, this in turn allows for reusing much but not all of
the default parameter

allow preset filters and related schemas for cloud

This refactors the cloud aggregation to make use of the
SearchSQLBuilder, this in turn allows for reusing much but not all of
the default parameter handling.

By allowing joins (on pid) and setting filters we can output clouds
based on the same data as a shown aggregation.

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Properly handle assignments in case of serial data

Search query should check assignment status only for pages, but not serial data.

Fixes #666

�� Automatic code style fixes

Restore disabling mechanism for "latest" in queries

make it easier to adjust/extend the search queries

Syntax components can overwrite getSearchConfig() and implement their
own SearchConfig that then can overwrite runSQLBuilder() to access the
underl

make it easier to adjust/extend the search queries

Syntax components can overwrite getSearchConfig() and implement their
own SearchConfig that then can overwrite runSQLBuilder() to access the
underlying QueryBuilder

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fixed style errors

refactoring dynamic parameter handling, part 3

This moves SQL building into it's own class, splitting it into separate
methods. This allows for reusing the filter handling a second time to
separate

refactoring dynamic parameter handling, part 3

This moves SQL building into it's own class, splitting it into separate
methods. This allows for reusing the filter handling a second time to
separate out the dynamic filters.

Still no work on tests

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