Allow e-mail regex to be configurable.

config/default.yml

@@ -79,14 +79,15 @@ web:
     min_threads: 2
     max_threads: 24
   api_user:
+    email_regex: "\\A[^@\\s]+@[^@\\s]+\\.[^@\\s]+\\z"
     first_name_exclude_regex: "(http|https|www|<|>|\\r|\\n)"
     last_name_exclude_regex: "(http|https|www|<|>|\\r|\\n)"
   admin:
     initial_superusers: []
     username_is_email: true
     password_length_min: 14
     password_length_max: 72
-    email_regex: "\\A[^@\\s]+@[^@\\s]+\\z"
+    email_regex: "\\A[^@\\s]+@[^@\\s]+\\.[^@\\s]+\\z"
     password_regex:
     auth_strategies:
       enabled:

src/api-umbrella/web-app/app/models/api_user.rb

@@ -59,7 +59,7 @@ class ApiUser
   validates :email,
     :presence => { :message => "Provide your email address." },
     :format => {
-      :with => /.+@.+\..+/,
+      :with => proc { ::Regexp.new(ApiUmbrellaConfig[:web][:api_user][:email_regex], ::Regexp::IGNORECASE) },
       :allow_blank => true,
       :message => "Provide a valid email address.",
     },

src/api-umbrella/web-app/config/initializers/devise.rb

@@ -161,7 +161,7 @@
   # Email regex used to validate email formats. It simply asserts that
   # one (and only one) @ exists in the given string. This is mainly
   # to give user feedback and not to assert the e-mail validity.
-  config.email_regexp = Regexp.new(ApiUmbrellaConfig[:web][:admin][:email_regex])
+  config.email_regexp = ::Regexp.new(ApiUmbrellaConfig[:web][:admin][:email_regex], ::Regexp::IGNORECASE)
 
   # ==> Configuration for :timeoutable
   # The time you want to timeout the user session without activity. After this