apply settings even if section doesn't exist

in response to issue #7. Not sure why this wasn't the original
behaviour, nor how I hadn't noticed it earlier

api.go

@@ -950,8 +950,11 @@ func (app *appContext) ModifyConfig(gc *gin.Context) {
 	gc.BindJSON(&req)
 	tempConfig, _ := ini.Load(app.config_path)
 	for section, settings := range req {
+		if section != "restart-program" {
 			_, err := tempConfig.GetSection(section)
-		if section != "restart-program" && err == nil {
+			if err != nil {
+				tempConfig.NewSection(section)
+			}
 			for setting, value := range settings.(map[string]interface{}) {
 				tempConfig.Section(section).Key(setting).SetValue(value.(string))
 			}

data/config-base.json

@@ -678,6 +678,7 @@
             "user_template",
             "user_configuration",
             "user_displayprefs",
+            "user_profiles",
             "custom_css"
         ],
         "meta": {
@@ -732,6 +733,14 @@
             "value": "",
             "description": "Location of stored displayPreferences template (also used for homescreen layout) (json)"
         },
+        "user_profiles": {
+            "name": "User Profiles",
+            "required": false,
+            "requires_restart": true,
+            "type": "text",
+            "value": "",
+            "description": "Location of stored user profiles (encompasses template and homescreen) (json)"
+        },
         "custom_css": {
             "name": "Custom CSS",
             "required": false,