Corrected thread padding via style.css

Conflicts:
	stylesheets/style.css
Adjust theme via catalog.css & style.css

Changes to catalog.css:

  - Forced all threads to a height of 300px and reduced padding to
    improve consistency. I think it improves the readability quite a bit
    but I may be alone in thinking this way.
  -

Changes to style.css:

  - Removed additional padding to allow new catalog spacing

Conflicts:
	stylesheets/style.css
Merge branch 'master' of github.com:vichan-devel/Tinyboard