Don’t run `git submodule update` when building

Revert commit 58c60cf
We need our submodules to be stable.
Move to a specific version of MASPreferences

To build a 32 bits version of MASPreferences
Other 32 bits fixes
Updated README for building with submodules.
Clarify the branch we use
Merge pull request #412 from barijaona/fix-build

Fix building the 32bits version
Added missing localizable strings

Localized for French and Spanish (thanks to Juan Pablo Adenza Martinez). For other languages, only placeholders were added.
Update acknowledgements
Upgrade version number to 3.0.2