Merge pull request #49 from alex-deaconu/master

[chore] Fix e2e tests
[feature] Initial commit of the Widget files

removing unused variables
get all params from the viewer in one call
updating references to additionalParams
other refactoring, formatting, and linting
Merge pull request #50 from alex-deaconu/feature/widget

[feature] Initial commit of the Widget files
[chore] Moved instruments and background to additionalParams