update qr code system and add location setter for suppliers

app/assets/javascripts/supplier/initializer.js.coffee

@@ -0,0 +1,40 @@
+$( ->
+  $("input.location_picker").each( (i)->
+    location_input = $(this)
+    map_div = $('<div>').addClass("location_picker_map")
+ 
+    location_input.before(map_div)
+    #this.parentNode.insertBefore(map_div, this)
+    location_input.hide()
+
+    lat = 52.07436798080633
+    lng = 4.316811561584473
+    if (this.value.split(',').length == 2)
+      values = this.value.split(',')
+      lat = values[0]
+      lng = values[1]
+    center = new google.maps.LatLng(lat,lng)
+    mapOptions =
+      zoom: 13
+      center: center
+      mapTypeId: google.maps.MapTypeId.ROADMAP,
+      zoomControl: true
+      zoomControlOptions:
+        style: google.maps.ZoomControlStyle.SMALL
+      mapTypeControl: false
+      panControl: false
+      scaleControl: false
+      streetViewControl: false
+      
+    map = new google.maps.Map(map_div.get(0), mapOptions)
+    marker = new google.maps.Marker(
+      position: center
+      map: map
+      title: 'Location'
+    )
+    google.maps.event.addListener(map, 'click', (point)->
+      marker.setPosition(point.latLng)
+      location_input.val point.latLng.lat() + ','+ point.latLng.lng()
+    )
+  )
+)

app/assets/stylesheets/supplier/structure.css.sass

@@ -20,3 +20,9 @@ body
   .alert
     form
       margin: 0
+.location_picker_map
+  width: 300px
+  height: 200px
+  border: 1px solid black
+  padding: 2px
+  display: inline-block