Update Greek locale
Add panel UI widget
Remove old toolbar options from Firefox
Remove years of XPCOM and XML namespace cruft
s/var/let/
Tweak loading order of JSM
Restore toolbar buttons for non-Australis Firefox
Update version number and applications
Fix broken JSM on Windows and Mac
Add tooltiptext to Australis widget
Update beta version number
Localise label and tooltip on Australis widget
Stop devtools CSS from inverting browser logos in toolbox
Update version number to 5.5