webmap: temp-fix white line gap bug

modules/web-map/src/main/kotlin/dev/adamko/kafkatorio/webmap/App.kt

@@ -12,6 +12,7 @@ import io.kvision.maps.Maps
 import io.kvision.module
 import io.kvision.panel.root
 import io.kvision.redux.ReduxStore
+import io.kvision.require
 import io.kvision.startApplication
 
 
@@ -27,6 +28,7 @@ class App(
   init {
     this.reduxStore = reduxStore
     this.wsService = wsService
+    require("./css/kafkatorio.css")
   }
 
   private val kvMaps: Maps

modules/web-map/src/main/resources/css/kafkatorio.css

@@ -0,0 +1,5 @@
+/* https://github.com/Leaflet/Leaflet/issues/3575 */
+.leaflet-tile {
+  width: 257px !important;
+  height: 257px !important;
+}