DavStorage in jio.storage.js completed.

Developping DavStorage.

automaticaly start it.

Local storage save document bugs fixed.

Publisher, Subscriber and Unsubscriber works.
We can now create most than one instance of JIO with "var j=JIO.createNew()".
Doc strings can realy help us to use JIO now.
Qunit tests for localStorage are not completly finished yet.
DavStorage have to be modified a little to make it complete.
ReplicateStorage does not exist yet.

localStorage job list is a rescue job list now.
job list and LocalStorage are inserted to localStorage differently.
...

LocalStorage and DAVStorage seam to be functionnal.
ReplicateStorage is still missing.

update JQuery from 1.5.2 to 1.7.2

We must now include them manually.

- Unexpected Results:
object.attr || true (-> always true)
is completly different than
object.attr !== undefined ? oject.attr : true (-> if attr is defined then attr else true)
- Adding few semicolon at the end of some instructions.
- Adding few comments to improve reading comprehension.