MAPG-125 use modal instead of custom box in map editor

public/static/css/map_editor.css

@@ -1,17 +1,3 @@
-#metadata {
-    position: absolute;
-    top: 50px;
-    left: 10px;
-    padding: 10px;
-    background-color: #eeeeee;
-    border: solid 1px #555555;
-    border-radius: 3px;
-    box-sizing: border-box;
-    opacity: 0.95;
-    z-index: 2;
-    visibility: hidden;
-}
-
 #map {
     width: 100%;
     height: calc(100% - 40px);
@@ -61,9 +47,6 @@
 }
 
 @media screen and (max-width: 999px) and (min-height: 600px) {
-    #metadata {
-        width: calc(100% - 155px);
-    }
     #map.selected {
         height: calc(50% - 20px);
     }
@@ -79,12 +62,6 @@
 }
 
 @media screen and (min-width: 1000px), (max-height: 599px) {
-    #metadata {
-        width: calc(50% - 20px);
-    }
-    #metadata.selected {
-        top: 95px;
-    }
     #map.selected {
         width: 50%;
     }