Fixed id on input

Added the `input-id` attribute to the `ui-select` directive to add an
id to the input element so that external label elements can be attached
to it.
Revert 36ee169..668dc33

This rolls back to commit 36ee1697060eb6460c5e13b939285bdbb7542c40.
Fixed id on input

Added the `input-id` attribute to the `ui-select` directive to add an
id to the input element so that external label elements can be attached
to it.
Merge branch 'fix-label-for-input'