Update jQuery, update README, update frontpage a little.
Remove unused files.
Update Closure compiler.
Remove freeciv-proxy, and put Javascript generating script in scripts/sync-js.sh.
Revert "Remove freeciv-proxy, and put Javascript generating script in scripts/sync-js.sh."

This reverts commit ffca477a19303ee5989c6343327f7b12773fbd5f.
Move generate_js_hand to scripts directory.
Refactor the socket communication between freeciv-proxy and freeciv-web
to make it more robust, by actually using packet size from header.
Make freeciv-proxy more robust and fault tolerant.