Add Geiger Counter readout

Closes #5

See merge request !9

Added a share button

See merge request !8

Web App Support

Closes #9 and #10

See merge request !7

Merge Authentication Feature

Closes #3

See merge request !6

Merge Scanner Selection URL Parameter Feature

Closes #8

See merge request !4

Feature displayname

See merge request !2

20220220 bug fixes

Closes #2

See merge request !1