- Correct upstream URL and upstream release URL

- Add patch crda-default.patch as well as template file crda.default
for /usr/etc/default/crda to support WLAN USB dongles as well as
mostly raspberry WLAN drivers not knowing about kernel builtin
support for WLAN regular country domains (boo#1179308)

- prepare usrmerge (boo#1029961)

- update to 4.14 and update home URL to use the github project
- fix keys defined but not used error
- add patch from upstream
crda-67f1e6ddbdfade357e234c9d58a30fe0a283fe60.patch
- add URLs to README
- add patch from upstream
crda-f4ef2531698fb9ba006e8b31a223b3269be8bc7c.patch
- add legacy note to README
- ## CRDA is no longer needed as of kernel v4.15