Initial support of PSGI
Fixes for PSGI
Merge branch 'master' into cperello/nginx-psgi

Conflicts:
	main/core/debian/precise/control
	main/core/src/cgi/ebox.cgi
Merge branch 'cperello/nginx-psgi' into jacalvo/nginx

Conflicts:
	main/core/debian/precise/control
	main/core/src/cgi/ebox.cgi
Use uWSGI instead of Apache mod_perl for running CGIs
Merge branch 'master' into jacalvo/nginx

Conflicts:
	main/core/ChangeLog
	main/core/debian/precise/control
	main/core/src/EBox/GlobalImpl.pm
	main/core/src/cgi/ebox.cgi
	main/core/stubs/apache.mas
Merge branch 'master' into cperello/nginx-psgi

Conflicts:
	main/core/ChangeLog
	main/core/debian/control
	main/core/src/EBox/WebAdmin.pm
	main/core/stubs/apache.mas
	main/core/stubs/nginx.conf.mas
Merge branch 'master' into cperello/nginx-psgi

Conflicts:
	main/core/debian/control
Removed apache2 dependencies from zentyal-core package
Merge branch 'master' into cperello/nginx-psgi

Conflicts:
	main/core/debian/control
Added new plack auth dependencies
Improved error handling
Fixed uwsgi launch using socket with a workaround for permissions
Fixed the psgi application and installed in a new PSGI application place holder
Updated nginx to server static files directly always so apache shouldn't ever get this kind of requests

Conflicts:
	main/core/ChangeLog
Added missing ChangeLog
Added support to install psgi applications
Added a dependency on the reverseproxy middleware module
set the gid for uwsgi or we lose the access to the shadow file
Fixes to get the PSGI application working