ToS acceptation

[lbesson]

This PR forces the validation of ToS

Existing users won't have tos_validated field set
On login, if user hasn't accepted ToS, a 403 with specific message will be returned (to be caught by UI)
The UI should ask to login again, with a small explanation + ToS checkbox

Once the login + accept ToS is done, the user can access camptocamp, and the date is stored in the db.

Note: do we know since when the ToS checkbox is there on register? We should skip this for such users (or more precisely, store a tos_validated field corresponding to user creation?)

[codacy-production]

Coverage summary from Codacy

Merging #1542 (d090e22) into master (2d7199e) - See PR on Codacy

Coverage variation	Diff coverage
0.00%	90.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (2d7199e)	19797	18350	92.69%
Head commit (d090e22)	19824 (+27)	18374 (+24)	92.69% (0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1542)	30	27	90.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[brunobesson]

Note: do we know since when the ToS checkbox is there on register? We should skip this for such users (or more precisely, store a tos_validated field corresponding to user creation?)

I'll check > it was released with v7.0.0 (c2corg/c2c_ui@20f296e). Released on Apr 1, 2019, don't remember exactly when it was deployed, but 7.0.2 was deployed on April 4, 2019.

[brunobesson]

@lbesson what's the status on this? c2corg/c2c_ui#3838 does the frontend part. Could we merge this PR? Is there sil some work needed?

[lbesson]

mostly asked to be put on hold by Loic, probably this should be fine now