Add more tests

Test the following (growing list):

• Search filters based on the query
• Search, when on another page, resets the page count
• Pagination works correctly
• Sorting for table headers works (all headers)
• Make sure copy install command works
• It links to the correct package and user
• Links to correct profile image
• Updated date is correct
• Details for addon is correct
• Make sure ember observer scores are correct
• Integration test components

If anyone else has anything to add much would be appreciated!