Merge pull request fosrl#42 from fosrl/dev

fix missing exitNodeId on new newt sites

Merge pull request fosrl#33 from fosrl/hotfix

fix regex for base_domain

Merge pull request fosrl#32 from fosrl/dev

add site_block_size to config, improve target input form validation, and lock down redirects

remove `base_url` from config (fosrl#13)

* add example config dir, logos, and update CONTRIBUTING.md

* update dockerignore

* split base_url into dashboard_url and base_domain

* Remove unessicary ports

* Allow anything for the ip

* Update docker tags

* Complex regex for domains/ips

* update gitignore

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Co-authored-by: Owen Schwartz <owen@txv.io>

hide whitelist section if no email configured