Add a new GenericSetup profile: "replace-plone-icons"

This profile will replace Plone's default icons (for content types, actions
etc.) with FontAwesome fonts.
Mention that default profile is required as well.
Mention that default profile is required as well.
Merge branch 'replace-plone-icons' of github.com:collective/collective.fontawesome into replace-plone-icons
Use FontAwesome fonts for content actions.
Add FontAwesome font icons for personaltools menu.
Add spacing
Update CHANGES.txt
Merge branch 'master' into replace-plone-icons

Conflicts:
	CHANGES.txt
Mention the new GS profile for replacing Plone's default fonts
Merge pull request #2 from collective/replace-plone-icons

New GenericSetup profile that replaces Plone's default icons with FontAwesome fonts.