updated wlprofile

[frankystone]

Fixes #358

• Removed some outdated Webservices
• Added a generic for Webservice/Nick
• Added some widelands related fields, like favourite Tribe/Map
• Added field Operating System, which is also shown in the forums to prevent developers questions about the used OS
• Added field Widelands Version, also shown in the forums

Shown in forum:

[frankystone]

From my side this is ready now.

Since i worked on the profile edit page i had also a solution to fetch a users time zone with javascript and set the Time zone field o the calculated value automatically. But i think this would be just a workaround for #185 so i removed the code.

If some one has better wording for the sentences, just tell :)

To get this working:

1. merge this branch
2. run ./manage.py migrate
3. run ./manage.py collectstatic -l
4. restart the website

Thanks to Janus who helped with some css!