update useAction.js to fix when action was triggered, but it can't download file

fix action was not shown, when standalone

Merge pull request 'update shouldShowDropdown functions to cater for Actions without ShowAsButton set' (#16) from pcorrick/nova-action-button-selectors:dropdown into master

update shouldShowDropdown functions to cater for Actions without ShowAsButton set

Merge pull request 'removed dropdown trigger component' (#13) from muhammadsaeedparacha/nova-action-button-selectors:master into master

removed dropdown trigger component

Merge pull request 'Fixed missing three dots menu on resource site.' (#11) from fix-three-dots-menu-bug into master

Fixed missing three dots menu on resource site.

Merge pull request 'Fixes issue #8 so that the dropdown action menu is displayed again.' (#9) from fix-#8-no-dropdown-menu into master

Fixes issue #8 so that the dropdown action menu is displayed again.

Merge pull request 'Button to Standalone actions' (#5) from feeh27/nova-action-button-selectors:master into master

Added constructor parameters proxy

Handling parent constructors

Uploading dist assets

Fix button space layout