Remove loose check on non-number controlled inputs. Fix trailing dot issue. (facebook#9584)

* Remove loose check when assigning non-number inputs

This commit removes a check I added when working on number input
issues where we perform a loose check on an input's value before we
assign it. This prevented controlled text inputs from disallowing
numeric text entry.

I also added a DOM fixture text case.

Related issues:

facebook#9561 (comment)

* Use strict equality as a guard before assigning input.value

This commit adds back the guard around assigning the value property to
an input, however it does it using a strict equals. This prevents
validated inputs, like emails and urls from losing the cursor
position.

It also adds associated test fixtures.

* Add copy command after build for interup with surge.sh

Author: nhunzaker

fixtures/dom/src/components/Header.js

@@ -226,8 +226,7 @@ var ReactDOMInput = {
           // browsers typically do this as necessary, jsdom doesn't.
           node.value = '' + value;
         }
-        // eslint-disable-next-line
-      } else if (value != node.value) {
+      } else if (node.value !== value) {
         // Cast `value` to a string to ensure the value is set correctly. While
         // browsers typically do this as necessary, jsdom doesn't.
         node.value = '' + value;