Move jshintrc to a top level directory

Jshint tries to find the config file .jshintrc in the directory of the linted file
and, if not found, iteratively moves upwards up to the system root.
See http://jshint.com/docs/\#Configuration .

It would be much more convenient (and standard) if our config file was
moved from extras/ to either / or vispa/.

(from redmine: issue id 2153, created on 2015-02-28 by root, closed on 2015-03-02)

• Changesets:
  • Revision 1966 by Marcel Rieger on 2015-03-02T16:06:03Z:

Move .jshintrc to root directory, fix #2153.

• Revision 1966 by Marcel Rieger on 2015-03-02T16:06:03Z:

Move .jshintrc to root directory, fix #2153.