Last post pushed below board name for mobile (i.e. media min-width: 320 max-width:480)

Signed-off-by: emanuele <emanuele45@gmail.com>
A bit of re-alignment for the board index from 30em to 50em

Signed-off-by: emanuele <emanuele45@gmail.com>
Some less columns for mobile things in recent posts

Signed-off-by: emanuele <emanuele45@gmail.com>
topic_info a bit smaller on certain screen sizes

Signed-off-by: emanuele <emanuele45@gmail.com>
Maybe topic_info below the subject in message index?

Signed-off-by: emanuele <emanuele45@gmail.com>
What about make the theme a little asymmetric for mobile devices and have the up/down a bit larger?

Signed-off-by: emanuele <emanuele45@gmail.com>
Merge pull request #796 from emanuele45/mobile_stuff

Mobile stuff