[massive store] Use a slave specific table for relation insertion in the massive store
* attribute a random id to the store
* add a column containing this id in the cwmassive_initialized table
* separate generic `master_init` which create the cwmassive_initialized table
from rtype specific initialization which must be done in each slave now
* delay removal of table indexes to `finish`
* get back relations from each table on `finish`
Similar work still has to be done for entities insertion - which will allow more
cleanup to the constraints handling which is still rough for now.
Related to #15538303
CSS Coding Standards
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(Draft, to be continued)
:Naming: camelCase
Indentation rules
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- 2 espaces avant les propriétés
- pas d'espace avant les ":", un espace après
- 1 seul espace entre les différentes valeurs pour une même propriété
Documentation
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Please keep rules semantically linked grouped together, with a comment about
what they are for.
Recommendation
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- Try to use existing classes rather than introduce new ones
- Keep things as simple as possible while in the framework
- Think about later customization by application
- Avoid introducing a new CSS file for a few lines of CSS, at least while the
framework doesn't include packing functionalities