Print the latest version number in search results

With the project name and summary, also mention the latest version of the
project which is present at pypi.
Useful in the scenario where developers are updating their project's
`requirements.txt` and need to compare the current upstream version against
their own installed version.

Signed-off-by: Rohan Jain <crodjer@gmail.com>
Fix alignment for version number in search (#1415)

Thanks @gvalkov for the suggestion.