LDEV-3765: Add command websockets in all tools. Run check less often (5s vs 2s) as the effect does not need to be immediate. Reorganise code. Add i18n support.
LDEV-2782: Move preceding lesson modification to service as all previous service calls are read-only, implying the save will be read-only too and leading to exceptions.
LDEV-3914: Fixed the horizontal scroll bar that appeared in learner and monitor, by setting the margins in the first row to 0 (they default to -15). Tweaked the show/hiding of the progress bar to suit more cases and to keep parallel activities aligned.
LDEV-3914: Fixed the horizontal scroll bar that appeared in learner and monitor, by setting the margins in the first row to 0 (they default to -15). Tweaked the show/hiding of the progress bar to suit more cases and to keep parallel activities aligned.
