Migrate to Rais 8.0

- Remove all Rodauth stuff and implement simple custom auth
- Migrate from sprockets to propshaft, hack some bootstrap stuff

app/views/sessions/new.html.slim

@@ -0,0 +1,13 @@
+= tag.div(flash[:alert], style: "color:red") if flash[:alert]
+= tag.div(flash[:notice], style: "color:green") if flash[:notice]
+
+h1 Login 
+
+= bootstrap_form_with url: session_path do |form|
+  = form.email_field :email_address, required: true, autofocus: true, autocomplete: "username", placeholder: "Enter your email address", value: params[:email_address], label: User.human_attribute_name(:email_address)
+  br
+  = form.password_field :password, required: true, autocomplete: "current-password", placeholder: "Enter your password", maxlength: 72, label: User.human_attribute_name(:password)
+  br
+  = form.submit "Login"
+br
+= link_to "Forgot password?", new_password_path