Configurable hostname
Merge branch 'master' into enterprise

Conflicts:
	IRCCloud.xcodeproj/project.pbxproj
	IRCCloud/Classes/AppDelegate.m
Fix an issue returning to the app from Chrome
Shift the loading indicator down a bit
Leave the user list icon visible when channel-hiddenMembers is set
Add $ to the list of valid URL characters for URLs that don't start with http://
Fix an issue where collapsing mode + quit could show the wrong hostname
Connect to the right host when relaunchig the app
Move where $ is listed as an acceptable character