Add OAUTH2 OIDC login support (#1140)

* Somewhat working

* Change Autocreate logic

* Add OAuth Error Message if Auto create Disabled

* Display OAUTH2 username(email) in Account Settings

* Disable Change user/pass for Oauth2 user

* Hide SSO Button if SSO login Disabled

* Remove some spaces and comments

* Add OAUTH2 Login example docker-compose file

* Add Some Comments

* Hide Printing of Client secret

* Remove OAUTH2 Beans

and replace with applicationProperties

* Add conditional annotation to Bean Creation

* Update settings.yml.template

Add OAUTH2 enabling template.

* Update messages_en_GB.properties

src/main/resources/templates/account.html

@@ -42,7 +42,7 @@
               </div>
               </th:block>
               <!-- Change Username Form -->
-              <form action="api/v1/user/change-username" method="post">
+              <form th:if="${!oAuth2Login}" action="api/v1/user/change-username" method="post">
                 <div class="mb-3">
                   <label for="newUsername" th:text="#{account.changeUsername}">Change Username</label>
                   <input type="text" class="form-control" name="newUsername" id="newUsername" th:placeholder="#{account.newUsername}">
@@ -59,8 +59,8 @@
               <hr> <!-- Separator Line -->
 
               <!-- Change Password Form -->
-              <h4 th:text="#{account.changePassword}">Change Password?</h4>
-              <form action="api/v1/user/change-password" method="post">
+              <h4 th:if="${!oAuth2Login}" th:text="#{account.changePassword}">Change Password?</h4>
+              <form th:if="${!oAuth2Login}" action="api/v1/user/change-password" method="post">
                 <div class="mb-3">
                   <label for="currentPassword" th:text="#{account.oldPassword}">Old Password</label>
                   <input type="password" class="form-control" name="currentPassword" id="currentPasswordPassword" th:placeholder="#{account.oldPassword}">