Make select act more natively

[gojohnnygo]

This PR resolves 948.

Summary

• Changed behavior for searchable single select only.
• Workflow 1
  • select has a value
  • ValueComponent clicked (the empty space)
  • the input field will have the text of the ValueComponent's label
  • cursor will be at the end of the text.
• Workflow 2
  • select has a value
  • ValueComponent's clicked (the value label)
  • the input field will have the text of the ValueComponent's label
  • text will be highlighted (image below). This is similar to the Facebook's search bar behavior.
    
• With the changes above, there is one side effect to the options. When you click on the the component, the drop down activates as usual but with only one option: the value the select already has. So the isInitOpen property was added to state so that on first open, all possible options are filtered.

[coveralls]

Coverage decreased (-0.4%) to 90.397% when pulling 93d4030 on gojohnnygo:master into aa57a93 on JedWatson:master.

[coveralls]

Coverage decreased (-0.4%) to 91.149% when pulling 9baf601 on gojohnnygo:master into 781fd43 on JedWatson:master.