- Added "actions" framework in server to replace the functions provided by the core modules
- Moved system update function from remoteactins core module to software update plugin.

and make changes to mysql users in the mysql plugin module.

Refs: 1722

1) Added DEVSYSTEM define in config.inc.php.master  defaults to 0
  If set to 1 classes can load as symbolc links, server.php now

2) server.php now resolves its require()ed files with an absolute
   path instead of relative.

- checking for running instance in server.php

Fixed a bug that prevented the modification of website settings of a site that the user created.

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Added code to prevent the excution of server scripts when the connect to the master db server fails.

Added new table monitor_data for the core-module monitor.

- improved several functions in site module
- added server classes to restart services