+ Common data elements moved to new section with matching tables [initial commit]
+ Code formatting
Refs: #16922
+ section levels are updated for common code lists
+ interactions added to TOC (user goes to section when clicked an item)
+ Code formatting
Refs: #16922
+ links added to navigate user to code list from table columns
Refs: #16922
+ Dates are added to titles to differentiate different versions of code lists
Refs: #16922
+ "Released at" phrase added to version date of codelists
Refs: #16922
+ Checkbox mechanism on datasets page is updated. Checkboxes will shown for all authenticated users not only for "candelete" users. So delete function is updated as well to adopt changes.
+ GetPrintout servlet is updated to respond concatenated object ids (only first object id is considered, combined version is not implemented yet).
Refs: #16922
+ Initial commit for combined pdf document generation from selected datasets. Generated pdf contains dataset contents with a hierarchy.
Refs: #16922
+ Links are updated for Toc (seems working correctly now)
+ Title page is added before each dataset
Refs: #16922
+ Headers and footers updated for Combined Pdf. Also title page added to include datasets in the document.
Refs: #16922
+ unused classed and definitions are removed from code base
+ Error responding added to GetPrintout when an exception caught
+ A new test suite (and a seed file) added with 24 test steps to test GetPrintout servlet
+ Minor updates and enhancements on test code
Refs: #16922
+ A new bullet added to dataset.jsp and dstable.jsp pages which is an option to download xls template with drop-down. (Note: If xls template without drop-down menus still continues to crash then freezing panes can be considered as a reason.)
+ XlsServlet class and delegating classes updated as well to produce xls template without drop-down items.
+ Test cases updated and new steps added.
Refs: #16937
+ registration status of vocabulary folder is displayed for logged in users
Refs: #18100
+ A new info area added for drop-down Xls templates
Refs: #16937
+ SITE_CODE_ID column dropped from T_SIDE_CODE (VOCABULARY_CONCEPT_ID is new primary key)
Refs: #17803
+ Sub sections of Codelists added to Toc
+ "Standard Elements Codelists" section renamed as "Non-common Elements Codelists"
+ links in table columns (i.e. "section 4") underlined
Refs: #16922
+ reference sheet for drop-down items are moved to the end of workbook. it is renamed to have less than 31 characters
+ test cases are updated as well to adopt changes
Refs: #16937
+ bug resolutions on datasets.jsp, also prompt messages are updated. (See Enriko's comments at  https://github.com/eea/eionet.datadict/commit/2bb496bed780124ba0e64d659a9a17bb9db8fe65)
Refs: #16922
+ empty released dates not shown
Refs: #16922