Update README and Shaarli's footer

[nodiscc]

• remove version number display from main page
• update project URL in footer, fixes Update footer #89
• update copyright notice in the footer
• mention origins of the fork in README, fixes Mention origins of the fork in the README #105
• update License section in the README
• remove screenshots as mediacru.sh is down

[pikzen]

http://blog.idleman.fr/ is no longer credited in the footer nor in COPYING for the original theme. Perhaps it should be added ?

[nodiscc]

I had to update info in COPYING as it missed credits to idleman for the original CSS, and Yahoo Inc. for the CSS reset. reset and main CSS were split in 2 distinct files. @e2jk agree to merge?

[e2jk]

I would remove the "wish" part in the sentence

he would have no time/wish to work on Shaarli

I think that fundamentally @sebsauvage still wants to work on Shaarli, but just that he doesn't have the time.

2 bits regarding the link to "Shaarli community" in the footer:

• Put the space out of the link
• Link to the root of the github repository instead of the COPYING file. This link is not meant to be a list of contributors, but to the homepage of the product, as was the case with the old link to the wiki page.

Since this pull request is touching copyright information, please add a mention of RainTPL. This is how I have it documented in the Debian package (I notice that the upstream file now contains more information about all the logos, I'll need to update my Debian file accordingly):

Files: inc/rain.tpl.class.php
Copyright: 2011-2012, Federico Ulfo <rainelemental@gmail.com>
           2011-2012, The Rain Team <hello@raintm.com>
License: LGPL-3+

[nodiscc]

@e2jk I fixed the points you mentioned. Let me know if this is ok to merge, I'd like to squash the commits to only have 2 in the history (Update README and Shaarli's footer and Fix missing authors and licenses in COPYING) befor merging.

[e2jk]

Yes, looks good. Go ahead with commit squashing.

[nodiscc]

Merged, thanks.