Fix #1192 : use mysqli by default

Author: cdujeu

core/src/plugins/core.ajaxplorer/ajxp_mixins.xml

@@ -65,7 +65,7 @@
             <global_param group_switch_name="dibi_provider" group_switch_label="MySQL" group_switch_value="mysql" name="mysql_database" default="pydio" label="MIXIN_MESSAGE[Database]" description="MIXIN_MESSAGE[Database name]" type="string" mandatory="true"/>
             <global_param group_switch_name="dibi_provider" group_switch_label="MySQL" group_switch_value="mysql" name="mysql_username" default="" label="MIXIN_MESSAGE[User]" description="MIXIN_MESSAGE[User name]" type="string" mandatory="true"/>
             <global_param group_switch_name="dibi_provider" group_switch_label="MySQL" group_switch_value="mysql" name="mysql_password" default="" label="MIXIN_MESSAGE[Password]" description="MIXIN_MESSAGE[User password]" type="password" mandatory="true"/>
-            <global_param group_switch_name="dibi_provider" group_switch_label="MySQL" group_switch_value="mysql" name="mysql_use_mysqli" default="false" label="MIXIN_MESSAGE[Use MySQLi]" description="MIXIN_MESSAGE[Use PHP MySQLi extension]" type="boolean" mandatory="true"/>
+            <global_param group_switch_name="dibi_provider" group_switch_label="MySQL" group_switch_value="mysql" name="mysql_use_mysqli" default="true" label="MIXIN_MESSAGE[Use MySQLi]" description="MIXIN_MESSAGE[Use PHP MySQLi extension]" type="boolean" mandatory="true"/>
             <global_param group_switch_name="dibi_provider" group_switch_label="Sqlite 3" group_switch_value="sqlite3" name="sqlite3_driver" default="sqlite3" label="MIXIN_MESSAGE[Driver]" description="MIXIN_MESSAGE[Driver type (do not touch)]" type="hidden" mandatory="true"/>
             <global_param group_switch_name="dibi_provider" group_switch_label="Sqlite 3" group_switch_value="sqlite3" name="sqlite3_formatDate" default="'Y-m-d'" label="formatDate" description="formatDate (do not touch)" type="hidden" mandatory="true"/>
             <global_param group_switch_name="dibi_provider" group_switch_label="Sqlite 3" group_switch_value="sqlite3" name="sqlite3_formatDateTime" default="'Y-m-d H:i:s'" label="formatDateTime" description="formatDateTime (do not touch)" type="hidden" mandatory="true"/>