"Create index pattern" wizard. (#13454)

* Create Index Pattern Creation wizard.
- Create a directive for each step in the wizard.
- Reorganize files into conventional folder structure.
- Rename files with more conventional and consistent naming patterns.
- Display indices, partial matches, exact matches.
- Add loading, empty, and success states.
- Add option to include system indices.

* Temp: comment out and mock getIndices functionality.

* Hook up data seaching

* Add for/id connections for form inputs and labels

* Automatically append a wildcard

* Highlight the index pattern in the results

* Ensure we only remove the last character if it's a `*`

* Auto hide index pattern id controls

* Ensure this link is tabbable

* Move the advanced fields down

* Use toggle button

* This shouldn't ever be required

* Revert "This shouldn't ever be required"

This reverts commit b6e31e79308271e7f04ea1d42ce66e32e7aa0612.

* Update based on comments in PR

* Ffew more changes

* Port changes from Tyler's PR, #13353

* Remove unnecessary file

* Fix broken functional tests

* Copy changes

* Fix functional tests

* Remove loading from the main select, and move to an additional select

* Show help text when loading

* Fix sorting

* Fixing broken functional tests

* Couple changes from PR review

* Ensure input field does not show a red border until touched

* More descriptive and consistent copy