Downgraded pegggy to fix build on windows.

Refactoring wip. Fixed #701.

Remove language setting in case en-gb had been set in previous versions

Fixed #609 (comment). Introducing chokidarOptions settings (#692) and…

… reverting default filewatcher configuration to pre 2.0.12

Added setting to change 1st day of the week. Fixed #671.

Fixed bug in group header button.

Fixed locale bug and possibly "includes" error in "human friendly dat…

…es" feature.

Fixed wrong portugese translation for "Notification threshold" (#677)…

…. Added file watcher settings (#675 & #676). Fixed #670. Continued work on #609.

Continued working on human friendly dates (#609). Added missing trans…

…lations. Updated dependencies.

Fixed broken translations of attribute group headlines. Refactoring #609

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