* fix(learning-dashboard): show all sessions of users with same internal ID
Store and show sessions of users that rejoin with the same internalID
fix(learning-dashboard): compatibility with old data
Adjust old data to new expected sessions format.
fix(learning-dashboard): csv join and left times
Missed update from new json format, join and left were incorrect.
* fix(learning-dashboard): remove line breaks and spaces off poll question in csv
* fix(learning-dashboard): Normalize locale strings and prevent crash when using invalid strings
Fixes#1795
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Co-authored-by: Lucas Fialho Zawacki <lfzawacki@gmail.com>
