Apply FormNavigation across all (or almost all) forms

We include a jQuery plugin called "formNavigate" which warns users about abandoning unsaved changes. Currently, this is included on an adhoc basis on ~36 tpl files. This seems like something that we should use on all (or almost all) our forms.

Proposal:

• Remove the 36+ references to formNavigate.tpl
• In CRM_Core_Resources::addCoreResources(), add formNavigate.tpl to the page-footer of every page (with possible exception for public facing pages)
• Modify formNavigate.tpl to bind to any ".crm-container" instead of the current
• Modify jquery.formNavigate.js to ignore elements with a CSS class (like "crm-navigate-ignore")
• Apply "crm-navigate-ignore" to the 3-4 spots which shouldn't use it

Ticket initially assigned to Kurund for feedback. You can do it if you want or feel free to assign back to me.