Simplify layout using grid (#7)

* Various style fix WIP

* Removing pin wrapper WIP

* Restore pin wrapper

* WIP

* Several style fixes

* Fix dropdown resizing

* Minor style adjustment, dorpdown bug fix

* Pins sizing

* Additional tests and style fixes

* More size tests and fixes

* More robust styling

* Small format fix

js/element/DropdownElement.js

@@ -9,7 +9,7 @@ export default class DropdownElement extends IElement {
         options: {
             type: Object,
         },
-        selected: {
+        selectedOption: {
             type: String,
         },
     }
@@ -18,7 +18,7 @@ export default class DropdownElement extends IElement {
         super()
         super.initialize({}, new DropdownTemplate())
         this.options = /** @type {[String, String][]} */([])
-        this.selected = ""
+        this.selectedOption = ""
     }
 
     /** @param {[String, String][]} options */