It contains now
- status : code
- statusText : string associated with error code
- message : an explicit error message
- array : array containing some returned errors from child job(s).

ReplicateStorage will now return the first returned result. (but not for
checkNameAvailability). So OfficeJS changed a little too.

This will set the maximum duration (in ms) a job may wait for.

Node name is now written before its test.
file 'OfficeJS/grunt/gruntall'

There is a grunt directory reserved for tests, concat and uglify.
A small script named 'gruntall' in this directory will test all grunt.js in the
subdirectories.

console.log no longer in scripts.
JIO classes are more secure now.

Add tests.

New class on jio.js, it permit to make easier storage development.
Add one test.