added user search functionality in view
user search in frontend (automatically when not searching for hashtags)
blank search query searches for all users
only refresh page every 60 seconds if the page has posts
Merge pull request #18 from philringsmuth/FIX_RefreshOnlyPosts

only refresh page every 60 seconds if the page has posts
Merge pull request #17 from philringsmuth/S13_UserSearch

S13 user search
Merge pull request #19 from philringsmuth/develop

merge it into master!