Merge tag 'v1.5.0' into devel

new version v1.5.0
Stores the information whether ceflib is properly installed
Magnetosonic Mach number added in irf_get_data_omni
Merge branch 'devel' of github.com:irfu/irfu-matlab into devel
v1.5.1 log file
Merge branch 'release-v1.5.1'