Allows the user to change the from email address from the System Preferences. The From Contact name is not yet in use but already implemented in the form for the future.
Implements feature CS-4591
Merges ahilles107:CS-4591 and CS-4591 together including changes to the naming convention

Conflicts:
	newscoop/application/configs/services/services.yml
Implements the new SystemPref EmailContact var

Conflicts:
	newscoop/template_engine/classes/CampContext.php
Allows the user to change the from email address from the System Preferences. The From Contact name is not yet in use but already implemented in the form for the future.
Implements feature CS-4591
Merges ahilles107:CS-4591 and CS-4591 together including changes to the naming convention
Sets the default EmailFromAddress and EmailContact vars

Conflicts:
	newscoop/install/classes/CampInstallationBase.php
Changes the Site's default EmailContact to the adminemail

Conflicts:
	newscoop/install/classes/CampInstallationBase.php
Forces the confirmation email to always use the system email address
Merge pull request #403 from m038/motm-792-dev

Motm 792 dev