Removed subgroups from html files

client/views/app/chatWindowDashboard.html

client/views/app/home.html

client/views/app/privateHistory.html

client/views/app/roomSearch.html

client/views/app/sideNav/channels.html

client/views/app/sideNav/chatRoomItem.html

client/views/app/sideNav/createChannelFlex.html

client/views/app/sideNav/directMessages.html

client/views/app/sideNav/listChannelsFlex.html

client/views/app/sideNav/privateGroups.html

client/views/app/sideNav/privateGroupsFlex.html

client/views/app/sideNav/sideNav.html

client/views/app/sideNav/starredRooms.html

client/views/app/sideNav/userSettingsFlex.html

client/views/app/sideNav/userStatus.html

client/views/app/userCard.html

client/views/avatar/prompt.html

client/views/error.html

client/views/login/footer.html

client/views/login/form.html