Add Flask-Cors for Json on crossed domain
Add orbit library

- for now only init one the list of the TLEs when the server is started.
Should be done every day in the future.
- give access to getPos(satname)
- server changed to call this lib
Autopan
Refactoring for easier use in the future
Merge pull request #8 from jlengrand/ISSUE-#1

Issue #1