gridAdapter: installedVersion
socket.io setObject
update button
fix disable of del-instance
update version & readme
Merge branch 'master' of https://github.com/ioBroker/ioBroker.admin

Conflicts:
	www/js/admin.js
fix clear adapter (setTimeout cleared active iframe if user clicked config again in < 1s)
keep cmdExec dialog open on error
Merge pull request #2 from hobbyquaker/master

available version, update button, small fixes