Fixes #5314: Display content of popup with overflow if needed
Merge pull request #588 from VinceMacBuche/bug_5314/simplemodal-overflow

Fixes #5314: Display content of popup with overflow if needed
Merge branch 'branches/rudder/2.6' into branches/rudder/2.10

Conflicts:
	rudder-web/src/main/webapp/style/rudder.css