[ task #814 ] Add extrafield feature into Project/project tasks module
Merge branch 'develop' of https://github.com/Dolibarr/dolibarr.git into
develop

Conflicts:
	htdocs/langs/ca_ES/admin.lang
	htdocs/langs/es_ES/admin.lang

Change-Id: I3c2c0789a92fb3d5506c717986ce0127dec75b9b
Merge pull request #825 from FHenry/develop

[ task #814 ] Add extrafield feature into Project/project tasks module