PRC-804: added Publish Date filters

[severinbeauvais]

• also created new Date Input component to simplify markup
• also moved File Upload component to app root (same as Admin)
• also fixed event propagation on drop-down filter controls
• misc cleanup

[severinbeauvais]

Ola doesn't want to merge this yet... This code will wait until the map page redesign and new filters pane.