@jafrank
Here it is, but I have not tested it on ver 3.7.2
EDIT:
I have checked now after upgrading from ver 3.7.1 to 3.7.2.
All is intact, but the gain button is wiped out because the upgrade has replaced the following file:
/usr/share/dump1090-fa/html/index.html
To restore it, follow step 4 in the how-to.
NOTE: After performing this step, clear browser cache (Ctrl+Shift+Delete) then reload browser (Ctrl+F5)