feature/merge-treedata-staging

[tzinckgraf]

Initial commit for the merge process. The process is split into 5 pieces:

• create a temp table with the staging data
• insert based on a left join
• update based on data differences
• delete / deactivate for any removed trees (a point of discussion)
• remove data from the staging table

This is all done in one stored procedure that takes an optional id_source_name. This will be called from the tree-sources repo

[zoobot]

HI @tzinckgraf Are you interested in working on this anymore or should I un-assign? Is this a variation of the other branch with a similar name?

[tzinckgraf]

Hey @zoobot, I apologize, I won't have the bandwidth for at least another month. You can unassign.