Soph/admin routes

[sophearahsp]

Summary

• auto increment route position when adding a unassigned route delivery item to a route
• set disabled increment/decrement route button when no route selected / not able to increment/decrement
• on increment/decrement, shift all other route positions in the list
• fix create client error inserting into database: client should not inherit from User class
• fix create volunteer error inserting into database: availabilities/availabilities last updated nullable
• fix seeding client now that it doesnt inherit from User class
• soft delete attribute for volunteer / client
• filter by soft delete attribute when get volunteer / client
• multiselect input for setting preferred neighborhood on create volunteer modal
• set preferred neighborhood on creating volunteer API
• edit preferred neighborhood on edit volunteer UI
• sts / map switch matches value
• withCredentials = true
• edit client should edit associated route delivery item

Test Plan

How did you test your changes?

Related Issues

Which issues does this PR resolve/work on?
Closes #