Search within a package is hard to use

[ascott18]

1. Search for a term within a package's API:
   
2. Click on a result in the result list
3. The search field is cleared, and the results list goes away, preventing me from clicking through the other search results. I have to re-perform the same search, click on the next result, and so on.

Additionally, pressing enter within the search box just refreshes the page (and also clears the search term). There is no progress indicator that hints that it searches in real time as you type, so if the search is performing slowly, as a user you instinctively press enter to perform a search, but this just wipes out your search term.

[jamesmcroft]

Added a little change in for this to prevent the form/input submission on enter (as this wasn't doing anything), and added a little loading indicator in which should help with the visual user experience.