Limit search suggestions for autocompletion

[JRadebold]

Limit the auto-complete search suggestions and add a field where you can click to get more suggestions.
This will prevent the autocomplete drop-down list from being overwhelmed with results for large data models.
Also, autocomplete is only enabled when three characters are entered in the search box.

[SBlechmann]

While reworking the search bar, we should think about the issue of making the serach non - case sensitive.