* Apply suggestion from code review
* updating images for signin and register page.
* fix: lint
* fix: logo update
* revert golangci
* Adding more strings and updated the logo. Still need to update the signin page images
* Apply suggestion from code review
Updating harness logo to use Open Source logo
* Update all occurences of 'gitness' to 'harness' within comments and markdown. Updated the logo reference (did not delete the Gitness logo directory yet). No active code changes except display strings.
