Pepdbagent

- Added archive table of namespaces
- Added sort by stars

- Added validation schemas

- Added user delete method
- Added project history and restoring projects

- Introduced new sample ordering with linked list [133](https://github.com/pepkit/pepdbagent/issues/133)
- Efficiency improvements of project update function
- Test restructuring

- Fixed forking schema
- Improved forking efficiency [129](https://github.com/pepkit/pepdbagent/issues/129)
- Added uploading project from dict
- Added get_config, get_smaples, get_subsamples methods to project module [128](https://github.com/pepkit/pepdbagent/issues/128)
- Fixed error handling in views API [130](https://github.com/pepkit/pepdbagent/issues/130)
- Added no_fail to views API

- Fixed POP update
- Improved error handling in views API
- Added stats method to Namespace module
- Updated docs
- Added coverage