Adds the ability to disable tool user ping since it causes issues with some clients.
Merge branch 'release/2.1' into release/2.2

Conflicts:
	db/src/main/java/com/psddev/cms/tool/CmsTool.java
	db/src/main/java/com/psddev/cms/tool/ToolPageContext.java
Merge branch 'release/2.2' into release/2.3
Merge branch 'release/2.3'