Fixes #460

Ensure that variables are declared with var
(cherry picked from commit 0545b9c807b8d0285fa358225b8fb6a6096010ba)
Change aodaac Data subset and Filters tab headings to Subset
Make these tabs the first tabs when displayed
Merge pull request #462 from aodn/subset-labels

Change aodaac Data subset and Filters tab headings to Subset
Merge branch 'master' into 3.2.0-rc