ENYO-3311: Enabled jshint indentation checkings

Indentation checking is turned on by default except for files not yet compliant.

For not yet compliant files:
* The indentation checking has been disabled to avoid blocking everything
* And a TODO: ENYO-3311 has been added in these files.
* Everybody is expected to fix the indentation issues on the go in ENYO-3311 specific commits.

The JIRA ENYO-3311 will be closed when all TODO ENYO-3311 will be fixed.

Enyo-DCO-1.1-Signed-off-by: Yves Del Medico <yves.del-medico@hp.com>