Merge branch 'release-3.0.1'
added pushover
added Pushover
updating changelog
Merge branch 'develop' of https://github.com/remmedia/phpservermon into remmedia-develop

Conflicts:
	src/lang/de_DE.lang.php
	src/lang/en_US.lang.php
	src/psm/Module/Server/Controller/ServerController.class.php
	src/templates/server/view.tpl.html
issue #101: finishing pushover implementation
minor form styling, adding check all/uncheck all buttons, fixing url entities in forms
issue #101: adding pushover.net to changelog/credits
psm_get_conf(): auto-load config if it hasnt been loaded yet
issue #101: adding test feature for Pushover
docs update for pushover and new languages
issue #101: fixing instasll for pushover
disabling sms by default on new installs