Remove redundant Update*() calls

UpdateMass() is called in UpdateFuelStats(), which is called in
UpdateEquipStats()
Merge pull request #2677 from laarmen/fix_redundant_call

Remove redundant Update*() calls
Merge pull request #29 from pioneerspacesim/master

Sync to master
auto-commit: translation updates
adjust build system for new autotools (silences warnings)
Merge pull request #30 from pioneerspacesim/master

Sinc to master
Merge pull request #31 from NyankoSensei/master

sync