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.