Merge pull request #865 from mattermost/PLT-404

PLT-404 adding basic error checking to config file.

api/admin.go

@@ -82,18 +82,11 @@ func saveConfig(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if len(cfg.ServiceSettings.ListenAddress) == 0 {
-		c.SetInvalidParam("saveConfig", "config")
+	if err := cfg.IsValid(); err != nil {
+		c.Err = err
 		return
 	}
 
-	if cfg.TeamSettings.MaxUsersPerTeam == 0 {
-		c.SetInvalidParam("saveConfig", "config")
-		return
-	}
-
-	// TODO run some cleanup validators
-
 	utils.SaveConfig(utils.CfgFileName, cfg)
 	utils.LoadConfig(utils.CfgFileName)
 	json := utils.Cfg.ToJson()