Fix for #11: attach content script to all frames
Fix for #11: attach content script to all frames

open-eid/chrome-token-signing,open-eid/chrome-token-signing,open-eid/chrome-token-signing,metsma/chrome-token-signing,open-eid/chrome-token-signing,open-eid/chrome-token-signing,metsma/chrome-token-signing,metsma/chrome-token-signing,metsma/chrome-token-signing,metsma/chrome-token-signing