Fix copyright notices in strings.xml files

Merge pull request jsettlers#480 from jsettlers/update_server_ip

Updated multiplayer server ip to new instance.

Merge pull request jsettlers#265 from jsettlers/fixes_for_5062c1f

Release preparation with several bug fixes in game logic.

Fixed resource signs displaying a wrong resource amount.

Improved flocking behavior to reduce formation of long lines of settl…

…ers.

Fixed wrong capitalization if the SND folder (was Snd) which caused t…

…rouble on case sensitive operating systems (e.g. Linux) (fixes jsettlers#11)

Cleaned up .gitignore file.