[doc] Fix link in pr2 robot documentation
[builder] Wrap long line in add_stream

While here, add 'pocolibs' in the available entry of add_stream
No functional changes expected
[doc + builder] Allow to pass multiples mw entries for each datastream

It will allow to build  better documentation.
Part of #277
[builder] Provide multiples entries for pocolibs datastream
[doc] Generate compatibility matrix from builder.data information

Now, the matrix will always be in sync with the code :)
Fix #280
[pr2] remove game properties from .blend
[builder] Armature is morseable