Imio.migrator

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- Added method to run given steps of a profile.
[sgeulette]

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- Display the catalog we are currently recataloging as several can be recataloged,
like in version 1.1 but this was lost somehow...
[gbastien]
- After an upgrade step has been executed, set manually new installed profile version
or despite upgrade step has been executed, it is still considered not
[gbastien]

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- Added methods to run upgrade steps for a given profile or all installed profiles (with pqi update).
[sgeulette]

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- Added method to clean registries (portal_javascripts, portal_css and portal_setup)

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- Display the catalog we are currently recataloging as several can be recataloged
- Prepare release on pypi.imio.be

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- Manage base migrator, reinstall profiles, refresh catalogs/workflow security, log start/end timestamp