fixes #1566 - Search/Data List: Change style of dataset/indicator titles
                    - set the default link color as well
fixes #1564 - Search/Data List: change "Preview" to "Hide Preview" when graph is shown
        - added functionality to swap callbacks and texts on the link
        - added animation when hiding graph
        - created set of callbacks to fix the case when a user opens a graph then opens another one without hiding the first one
        - fix animation on the above case
fixes #1517 - Main Nav changes to accomodate "Feedback" button
                    - removed "Contact" from main menu
                    - added Feedback button
                    - changed new dataset button caption to "Share data"
                    - fixed secondary menu positioning
fixes #1455 - Indicator Detail>Country Selection: handle appearance of long country names more nicely
fixes #1582 - Dataset/Indicator Detail: panel separator line length behavior
                    - after fixing the line length, had to remove the margin top 60px of the Continuous Browsing
                    - CB has mTop15 and both primary and secondary containers now have a padding-bottom of 45px;
Merge pull request #1602 from OCHA-DAP/arti-sprint-37

Arti sprint 37