Prevent button click when enter key is pressed in LDAP wizard

Pressing enter in the LDAP wizard will trigger a click on the first
button. In the main page it would trigger the delete dialog, which is
quite inconvenient.

Added a type attribute to suppress this behavior.

apps/user_ldap/templates/part.settingcontrols.php

@@ -1,6 +1,6 @@
 <div class="ldapSettingControls">
 	<input class="ldap_submit" value="<?php p($l->t('Save'));?>" type="submit">
-	<button class="ldap_action_test_connection" name="ldap_action_test_connection">
+	<button type="button" class="ldap_action_test_connection" name="ldap_action_test_connection">
 		<?php p($l->t('Test Configuration'));?>
 	</button>
 	<a href="<?php p(\OC_Helper::linkToDocs('admin-ldap')); ?>"

apps/user_ldap/templates/part.wizard-server.php

@@ -24,7 +24,7 @@
 		?>
 		<option value="NEW"><?php p($l->t('Add Server Configuration'));?></option>
 		</select>
-		<button id="ldap_action_delete_configuration"
+		<button type="button" id="ldap_action_delete_configuration"
 			name="ldap_action_delete_configuration"><?php p($l->t('Delete Configuration'));?></button>
 		</p>
 

apps/user_ldap/templates/settings.php

@@ -59,7 +59,7 @@
 		<p class="ldapIndent"><label for="ldap_expert_uuid_group_attr"><?php p($l->t('UUID Attribute for Groups:'));?></label><input type="text" id="ldap_expert_uuid_group_attr" name="ldap_expert_uuid_group_attr" data-default="<?php p($_['ldap_expert_uuid_group_attr_default']); ?>" /></p>
 		<p><strong><?php p($l->t('Username-LDAP User Mapping'));?></strong></p>
 		<p class="ldapIndent"><?php p($l->t('Usernames are used to store and assign (meta) data. In order to precisely identify and recognize users, each LDAP user will have a internal username. This requires a mapping from username to LDAP user. The created username is mapped to the UUID of the LDAP user. Additionally the DN is cached as well to reduce LDAP interaction, but it is not used for identification. If the DN changes, the changes will be found. The internal username is used all over. Clearing the mappings will have leftovers everywhere. Clearing the mappings is not configuration sensitive, it affects all LDAP configurations! Never clear the mappings in a production environment, only in a testing or experimental stage.'));?></p>
-		<p class="ldapIndent"><button id="ldap_action_clear_user_mappings" name="ldap_action_clear_user_mappings"><?php p($l->t('Clear Username-LDAP User Mapping'));?></button><br/><button id="ldap_action_clear_group_mappings" name="ldap_action_clear_group_mappings"><?php p($l->t('Clear Groupname-LDAP Group Mapping'));?></button></p>
+		<p class="ldapIndent"><button type="button" id="ldap_action_clear_user_mappings" name="ldap_action_clear_user_mappings"><?php p($l->t('Clear Username-LDAP User Mapping'));?></button><br/><button type="button" id="ldap_action_clear_group_mappings" name="ldap_action_clear_group_mappings"><?php p($l->t('Clear Groupname-LDAP Group Mapping'));?></button></p>
 		<?php print_unescaped($_['settingControls']); ?>
 	</fieldset>
 	</div>