Version 1.5.1
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- add email to users on fixtures ;
- spare ressource with recursive trigger on inserting user ;
- fix error when no flags are used during edit and creation of permission group ;

Version 1.5.2
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- allow to filters users shown by `UserPickerType` based on flags. This flags do an additional filter based on the flags assigned in permissions groups;
- add a method to filters users by permissions groups flags in `UserRepository`

Version 1.5.3
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- fix error when interval is hour only

Version 1.5.4
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- layout of page "list exports"
- create function "SIMILARITY" (see [posgtgresql documentation](https://www.postgresql.org/docs/9.6/static/pgtrgm.html)) 
- create function "OVERLAPSI", which will detect period of date overlapping, replacing NULL date by infinity or -infinity (see [postgresql page for date time function and operators](https://www.postgresql.org/docs/9.6/static/functions-datetime.html))
- add repository for Center class

Version 1.5.5
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- add margin of 0.5rem beyond buttons ;
- add a spreadsheet formatter (format xlsx, ods, csv) for lists
- add possibility to generate DirectExport: exports without formatters, filters and aggregators ;
- add api for grouping centers ;
- select centers as grouped on step "pick centers" in exports ;

Version 1.5.6
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- fix long url in report download. The exports parameters are now stored in redis.
- add an option to allow address to be empty if street or postcode is not set. Used for embedding address in another form, when address is not required.

Branche de développement
========================

- insert the title of the export inside the "download" page ;