2020.03.17: - Removed echo of token in circleci config and updated nwjs version.

nw-app:
- Added xsd xmlns to Readme component versions.

page-editor:
- Now it is possible to edit confidences of Property, TextEquiv, Coords and Baseline.
- Added support for other region types: ImageRegion, SeparatorRegion and CustomRegion.
- Fixed disablings of All mode.
- Fixed bug in lower right panel when exiting property modal.
- Removed the property tags.

page-canvas:
- Exporting isValidCoords function.
- Changes to support other region types: ImageRegion, SeparatorRegion and CustomRegion.

page2svg.xslt, svg2page.xslt:
- Support for CustomRegion.