closes #1922
fix guest priv
closes #1924
logic for #1837
fix var name, #1925
Merge branch 'master' of https://github.com/NodeBB/NodeBB
small cleanup to postSummary
#1925
db search 0.0.13
fix fatal error when renaming group with no users
fluidized ACP groups modal dialog
Merge pull request #1928 from chronize/master

fix fatal error when renaming new group with no users
check err
group null and err check
closes #1912
closes #1913
#1914
#1930

simple solution for now, wraps images with <a> that opens in new tab
permission fix for popular page
early outs for privs

no need to check if empty array is passed in, happens if there are no
unread topics
remove dupe cids before checking for privileges