Title: Fix exception when editing a visual of type single host group
Level: 1
Component: multisite
Compatible: compat
Version: 1.2.6b1
Date: 1414770553
Class: fix

Context editor was broken, because there were two filters with the
same HTML variable name <tt>hostgroup</tt>. This has been fixed
by renaming the name of the host group selection filter to <tt>host_group</tt>.

