Fix #83: Add RedirectTemporary to .fsi.
Instance members instead of static ones for the PositionError class.
update Global class members with inline js
Add clear, item, key, length and removeItem members to the Storage class.
Add session storage definition.
Storage event definition.
Generalize debug/release for offline sitelets.
Merged in TahaHachana/websharper (pull request #2)

Updates to the Global and Web Storage definitions
Fixes to LocalStorage API in HTML5.