Better logs, changed the name of threads into JOB_+name, changed log.out and log.err to be easier to identify on the remote, now works 100% of time (in my little sample)

Reimplementing Fix for  #613

See merge request es/autosubmit!223

Retrials

See merge request !222

# Conflicts:
#   autosubmit/job/job.py

Fixed#613. Implemented a modified time validation for structure. If the user...

See merge request !221

Fixed#613. Implemented a modified time validation for structure. If the user modifies jobs_.conf after the structure has been created, the structure will be updated. Improved job historical data retrieval algorithm.

Migrate

See merge request !220

Migration command improved

Fixed deleting experiment bug

See merge request !219