PLT-2406 Add "Database:" to Mattermost About Dialog (#3261)

* Add "Database:" to Mattermost About Dialog

The property has been named SQLDriverName to make a difference with the
FileSettings DriverName.

* Add missing string for 'Database' in i18n file

utils/config.go

@@ -249,6 +249,7 @@ func getClientConfig(c *model.Config) map[string]string {
 
 	props["DefaultClientLocale"] = *c.LocalizationSettings.DefaultClientLocale
 	props["AvailableLocales"] = *c.LocalizationSettings.AvailableLocales
+	props["SQLDriverName"] = c.SqlSettings.DriverName
 
 	if IsLicensed {
 		if *License.Features.CustomBrand {

webapp/components/about_build_modal.jsx

@@ -137,6 +137,13 @@ export default class AboutBuildModal extends React.Component {
                                     />
                                     {'\u00a0' + config.Version + '\u00a0' + config.BuildNumber}
                                 </div>
+                                <div>
+                                    <FormattedMessage
+                                        id='about.database'
+                                        defaultMessage='Database:'
+                                    />
+                                    {'\u00a0' + config.SQLDriverName}
+                                </div>
                             </div>
                             {licensee}
                         </div>

webapp/i18n/en.json

@@ -15,6 +15,7 @@
   "about.teamEditiont1": "Enterprise Edition",
   "about.title": "About Mattermost",
   "about.version": "Version:",
+  "about.database": "Database:",
   "access_history.title": "Access History",
   "activity_log.activeSessions": "Active Sessions",
   "activity_log.browser": "Browser: {browser}",