Nagios implementation

Adds compatibility to include nagios or check_mk (nagios add on) data in ispc's monitoring-module.

URL must containg /check_mk for cmk-detection to work. This makes OMD (current official cmk setup method) fully compatible.
Further oldschool manual CMK-Setups are also working as long as you keep the default /check_mk (if you did not you can add an alias or simply build the correct autologin url on your own and leave login data blank)

Further a requirement is that your URL is HTTPS and using the same domain! E.g. ISPC is on panel.example.com you can have monitoring on moni.example.com but not moni.otherdomain.org. This is a browser limitation to iframes.

For Check_MK you have to use Cookie Based authentication. This is default since OMD is out... If you did not change yet, blame yourself :) Workaround: manually add Basic Auth data to the URL. I really mean not to support this.


Btw: I also plan on building a nagios plugin or some other way to check ISPC's health using Nagios but I need much more time for this so probably this will come as a request for 3.2 then.

See merge request !434

Merge branch 'nagios-implementation' of git.ispconfig.org:darkalex/ispconfig3 into nagios-implementation

Conflicts:
	interface/web/monitor/show_nagios.php
	interface/web/monitor/templates/show_nagios.htm

Known Bugs: CMK-URL is damaged (origtarget), iframe stays white...?

Known Bugs: CMK-URL is damaged (origtarget), iframe stays white...?

Updater interactive service config

I hope this is okay for you. Please have a quick look at docs/autoinstall_samples/autoinstall.ini.sample  if that syntax is okay.
This MR closes ispconfig/ispconfig3#4163
and also closes ispconfig/ispconfig3#4050

Tested on Master-Slave and confirmed working on both. See comments.

See merge request !431

Added MLMMJ installer

I've tryed to implement the installer for mlmmj
This is my first experience on merging with an external project. I hope all my work is correct. 
Anyway, I'm here and responsive to your comments
After that, I'm working, by now on the ML web interface. 
I'll do another merge request when it will be ready.

See merge request !432

fixed html id in nav for munin

just a minimal bug. At least I think so... Or did I understand this wrong?

See merge request !433

updater: db-query working, requests working. This will be my MR and hopefully fixes #4163 and hopefully also fixes #4050

Fixes db quota (typo)

Fixes db quota (typo) #4158 

See merge request !430

Stable 3.1



See merge request !429

clean up servers select list when adding firewall record (Fixes: #4088)



See merge request !428

Stable 3.1



See merge request !427

fixed 300-quota_notify.inc.php



See merge request !426

Remote API: new API call: server_get_php_versions.

This function was missing in a multi ISPC server environment, so I've implemented it. It has been tested and is working with both SOAP and REST calls. The result is an array of values that are accepted in the websites 'fastcgi_php_version' parameter.

See merge request !425