fixed html syntax in admin_activity & syntax in who's online

<a href='#crh-start'></a><a href='#crh-data-%7B%22processed%22%3A%20%5B%22https%3A//github.com/zencart/zc-v1-series/pull/136%23discussion_r16638153%22%2C%20%22https%3A//github.com/zencart/zc-v1-series/pull/136%23issuecomment-53211048%22%2C%20%22https%3A//github.com/zencart/zc-v1-series/pull/136%23issuecomment-53457707%22%5D%2C%20%22comments%22%3A%20%7B%22General%20Comment%22%3A%20%7B%22html_url%22%3A%20%22https%3A//github.com/zencart/zc-v1-series/pull/136%23issuecomment-53211048%22%2C%20%22comments%22%3A%20%5B%7B%22body%22%3A%20%22I%20agree%20with%20the%20commenting%20you%20proposed%20and%20the%20line%20ending%20is%20unintentional.%22%2C%20%22created_at%22%3A%20%222014-08-24T22%3A17%3A25Z%22%2C%20%22user%22%3A%20%7B%22avatar_url%22%3A%20%22https%3A//avatars.githubusercontent.com/u/2678085%3Fv%3D2%22%2C%20%22html_url%22%3A%20%22https%3A//github.com/bislewl%22%7D%7D%2C%20%7B%22body%22%3A%20%22Hmmm%20...%20the%20line-endings%20are%20still%20bad%22%2C%20%22created_at%22%3A%20%222014-08-26T17%3A24%3A14Z%22%2C%20%22user%22%3A%20%7B%22avatar_url%22%3A%20%22https%3A//avatars.githubusercontent.com/u/404472%3Fv%3D2%22%2C%20%22html_url%22%3A%20%22https%3A//github.com/drbyte%22%7D%7D%5D%2C%20%22title%22%3A%20%22General%20Comment%22%7D%2C%20%22Pull%203cb7d845ac913dfaf8d9e506dfed36b9997f28e4%20admin/whos_online.php%20745%22%3A%20%7B%22html_url%22%3A%20%22https%3A//github.com/zencart/zc-v1-series/pull/136%23discussion_r16638153%22%2C%20%22comments%22%3A%20%5B%7B%22body%22%3A%20%22Apart%20from%20hyphenating%20this%20line%20%28and%20I%27d%20argue%20that%20it%20should%20be%20/%2A%20commented%20%2A/%20instead%29%2C%20and%20changing%20the%20line-ending%20character%20on%20every%20line%20in%20this%20file%2C%20I%20don%27t%20see%20what%20other%20reason%20you%27ve%20touched%20this%20file%20at%20all.%22%2C%20%22created_at%22%3A%20%222014-08-24T21%3A38%3A06Z%22%2C%20%22user%22%3A%20%7B%22avatar_url%22%3A%20%22https%3A//avatars.githubusercontent.com/u/404472%3Fv%3D2%22%2C%20%22html_url%22%3A%20%22https%3A//github.com/drbyte%22%7D%7D%5D%2C%20%22title%22%3A%20%22File%3A%20admin/whos_online.php%3AL1-543%22%7D%7D%7D'></a>
<a href='https://www.codereviewhub.com/'><img src='http://www.codereviewhub.com/site/github-bar.png' height=40></a>
- [ ] <a href='#crh-comment-Pull 3cb7d845ac913dfaf8d9e506dfed36b9997f28e4 admin/whos_online.php 745'></a> <img src='http://www.codereviewhub.com/site/github-remaining.png' height=16 width=60>&nbsp;<b><a href='https://github.com/zencart/zc-v1-series/pull/136#discussion_r16638153'>File: admin/whos_online.php:L1-543</a></b>
- <a href='https://github.com/drbyte'><img border=0 src='https://avatars.githubusercontent.com/u/404472?v=2' height=16 width=16'></a> Apart from hyphenating this line (and I'd argue that it should be /* commented */ instead), and changing the line-ending character on every line in this file, I don't see what other reason you've touched this file at all.
- [ ] <a href='#crh-comment-General Comment'></a> <img src='http://www.codereviewhub.com/site/github-remaining.png' height=16 width=60>&nbsp;<b><a href='https://github.com/zencart/zc-v1-series/pull/136#issuecomment-53211048'>General Comment</a></b>
- <a href='https://github.com/bislewl'><img border=0 src='https://avatars.githubusercontent.com/u/2678085?v=2' height=16 width=16'></a> I agree with the commenting you proposed and the line ending is unintentional.
- <a href='https://github.com/drbyte'><img border=0 src='https://avatars.githubusercontent.com/u/404472?v=2' height=16 width=16'></a> Hmmm ... the line-endings are still bad


<a href='https://www.codereviewhub.com/zencart/zc-v1-series/pull/136?mark_as_completed=1'><img src='http://www.codereviewhub.com/site/github-mark-as-completed.png' height=26></a>&nbsp;<a href='https://www.codereviewhub.com/zencart/zc-v1-series/pull/136?approve=1'><img src='http://www.codereviewhub.com/site/github-approve.png' height=26></a>&nbsp;<a href='https://github.com/zencart/zc-v1-series/pull/136'><img src='http://www.codereviewhub.com/site/github-refresh.png' height=26></a>
<a href='#crh-end'></a>