(cherry picked from commit 53d521a)

…opdowns

(cherry picked from commit aeea1cd)

…dex is unnecessary & throws accessibility errors from AXE tools

(cherry picked from commit 5dad8be)

…PI info and generate CSRF tokens

(cherry picked from commit a581219)

(cherry picked from commit 8d61fa6)

…instead of global constants

(cherry picked from commit e47593b)

(cherry picked from commit 6c76d8c)

(cherry picked from commit 9894d31)

…nt Source tab and Item Mapper tab

(cherry picked from commit 00cb2f9)

…streams. Minor updates to HTML to pass accessibility tests.

(cherry picked from commit 80492cd)

(cherry picked from commit 31bc052)

(cherry picked from commit 0aaf313)

…sion e2e tests.

(cherry picked from commit a5a89a4)