This method does add:
* reverseLongitude method on aladin object
* add a longitudeReversed flag in AladinOptions, when creating the
aladin view to reverse the longitude axis globally at start.
* BREAKS the HiPS options API by removing the longitudeReversed option
at the HiPS level, replacing it by a global flag on the aladin lite view
* fix: when adding two times the same survey, we could not change its
hips options
This commit also impl #191