Refs #20024; started adding the logic for retriving the folder contents dynamically
Refs #20024; Modified portlet_soer_sections_navigation.pt to display the section links by using catalog query instead of having hardcoded entries
Refs #20024; Changed the following:

- Added right padding to the eea-list-column classes in order to trigger text wrapping avoiding thus the situation where one column is too close to the other
- Added caching for the content function since it can be called more than once with the same parameter
- Modified soer2015_frontpage to use the content method in order to retrieve the link listing
Refs #20024; removed inline styles from hidden synthesis fancybox popup
Refs #20024; Added history entry and updated doctypes
Merge pull request #2 from eea/dynamic_nav_menus

Dynamic nav menus