Revert "Rename license.txt -> LICENSE.txt"

This reverts commit e477da35797ae5dbece52c951a96442823a55057.
Introduce Persist button in the Console panel
Merge branch 'master' of github.com:firebug/firebug.next
Merge branch 'master' of github.com:firebug/firebug.next into issue88
Improve API for side panel toggle button
Toggle side panels for the Console panel
Properly update the side splitter theme
Experimenting with simple command editor
Fixed toggling of Resume button icon and centered toggling breakpoints
icon
Hide the original Debugger options and side bar toggle buttons
#91 Disabling Firebug should remove its panels from open toolboxes (workaround)
#88 merge with the master