Renamed $respondents_autocomplete_handle to $customers_autocomplete_handle

It was missed when conversion from respondent to customer due to a
merge conflict
Renamed respondents-autocomplete.js to customers-autocomplete.js
Renamed changed file in grunt as file is renamed
Rebuilded CSS/JS resources
Merge pull request #173 from VarunAgw/customers

Remove `respondents` strings from merge conflict.
Bump version for cachebusters.
Close ticket link was not working

Fixes #174
Add required dependencies to customer-autocomplete script file
Merge pull request #177 from VarunAgw/bugs

Target correct element for the Close Ticket button
Bump version for cachebusters.
Subject input field clipped in Firefox

Fixes #175
[Bug] Conversation box populated with previous comment

Fixes #176
Merge pull request #179 from VarunAgw/auto-save

Delete autosave conversation value after post saved
Rebuilded JS/CSS resources
Merge pull request #178 from VarunAgw/bugs

Add extra height to subject and conversation input fields.