(This was identified in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20332#note_88387746) ## Description There are some styling issues with the personal access tokens page. Let's make it better! :rocket: ## Proposal Here are the two significant issues that were identified: - Convert layout to single-column in order to give more space to the personal access tokens table. [(See this discussion)](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20332#note_88189149) - Change the "no personal access token" message styling. Right now it looks strange. It should probably be just a pragraph. [(See this comment)](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20332#note_88165531) - Add `.table.responsive-table` to personal access token table. [(See this comment)](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20332#note_90673700)