Fixed errors:
- middle_column margin shorthand attribute, affected the layout
- typo's in hex color code in bonus shop buy buttons
Add: functionality to render the "tags box" on torrents/details.php either horizontally/vertically (middle_column/sidebar)
Add: user configurable setting "ShowTagsHorizontally" to toggle above functionality 
...
- Extracted tags box rendering code from details.php into a separate file (details_tags.php)
- Replaced tags box' inline CSS with classes and updated global.css
- Changed "light" style.css to display the tags box list items slightly less wide in horizontal mode (to compensate for the narrower middle_column)
- Added site option "ShowTagsHorizontally" to user/edit.php and user/takeedit.php