[[Imported from SVN: r7932]]

[[Imported from SVN: r7931]]

[[Imported from SVN: r7929]]

[[Imported from SVN: r7928]]

[[Imported from SVN: r7926]]

[[Imported from SVN: r7925]]

[[Imported from SVN: r7924]]

[[Imported from SVN: r7923]]

[[Imported from SVN: r7922]]

[[Imported from SVN: r7921]]

[[Imported from SVN: r7920]]

[[Imported from SVN: r7919]]

[[Imported from SVN: r7918]]

[[Imported from SVN: r7917]]

change return type of LocalGFETestFunction. Instead of a std::vector(lagrangepoints * tangentdim) it now returns a vector<arrays< ,tangentdim> >(lagrangepoints). This way it is easier to identify local coefficients with their corresponding basis functions.   

[[Imported from SVN: r7916]]

[[Imported from SVN: r7915]]

[[Imported from SVN: r7914]]

[[Imported from SVN: r7913]]

[[Imported from SVN: r7912]]

[[Imported from SVN: r7911]]

[[Imported from SVN: r7910]]

[[Imported from SVN: r7909]]

[[Imported from SVN: r7908]]

[[Imported from SVN: r7907]]

[[Imported from SVN: r7906]]

[[Imported from SVN: r7905]]

[[Imported from SVN: r7904]]

[[Imported from SVN: r7903]]

[[Imported from SVN: r7902]]

Hence we want an interface more like a local basis, rather
than individual functions.

[[Imported from SVN: r7901]]

[[Imported from SVN: r7899]]

[[Imported from SVN: r7898]]

And use it to implement the Rotation<3> class.  This makes the
Rotation implementation easier to understand.  Previously we
have used a FieldVector<3> when a skew matrix was meant.
This leads to confusion now that we also use quaternions as
tangent vectors of SO(3).  In local coordinates, these also
have 3 entries.  Adding the new skew matrix class makes it
clearer what kind of mathematical object is meant.

[[Imported from SVN: r7897]]

It seems dangerous: I tend to get confused what these arguments
are.  Plus, the method is unused.

[[Imported from SVN: r7890]]

[[Imported from SVN: r7889]]

[[Imported from SVN: r7888]]

[[Imported from SVN: r7887]]

[[Imported from SVN: r7886]]

simplify the code by making the AverageDistanceAssembler accept the interpolation weights in a std::vector of FieldVectors

[[Imported from SVN: r7885]]

[[Imported from SVN: r7884]]