autoComplete - Limit results to exact spelling of partial address

[BK01]

Scenario:

• The client is building a web application that will use autoComplete to provide a location search feature.
• Users of the web application will use autoComplete to search for civic addresses, localities and streets.

Issue:

• When users provide a partial address that does not contain a civic number (locality or street search), the results can be broad due to the number of possible matches, aliases, spell check etc.

Task:

• Introduce a new boolean parameter that can be used in combination with autoComplete (name tbd: perhaps 'exactSpelling').
• If true, the resulting list of suggestions will begin with the partial address.
• Default value is false

[cmhodgson]

The code for the exactSpelling option is committed to the 4.3.x branch here:
9bf63ae