[[Imported from SVN: r7120]]

[[Imported from SVN: r7119]]

[[Imported from SVN: r7118]]

[[Imported from SVN: r7117]]

[[Imported from SVN: r7115]]

bugfix in computeAveragePressure: use the proper embedding of intersections into elements when integrating over the boundary

[[Imported from SVN: r7105]]

[[Imported from SVN: r7104]]

[[Imported from SVN: r7103]]

[[Imported from SVN: r7102]]

[[Imported from SVN: r7101]]

This test itself is not tested yet and may still contain bugs.

Also, I out-commented the permutation-invariance test.  I have to make
sure somehow that test points are close enough together.

[[Imported from SVN: r7100]]

[[Imported from SVN: r7099]]

a separate name.  We cannot rely on overloading for different arguments,
because embedded and non-embedded tangent vectors may have the same type.

[[Imported from SVN: r7098]]

[[Imported from SVN: r7097]]

fix sign bug in the series expansion of sin(x/2)/x.  Thanks to Jonathan Youett for pointing this out

[[Imported from SVN: r7095]]

[[Imported from SVN: r7090]]

[[Imported from SVN: r7089]]

[[Imported from SVN: r7086]]

[[Imported from SVN: r7085]]

[[Imported from SVN: r7084]]

[[Imported from SVN: r7083]]

[[Imported from SVN: r7082]]

[[Imported from SVN: r7081]]

[[Imported from SVN: r7070]]

[[Imported from SVN: r7067]]

bugfix in thirdDerivativeOfDistanceSquaredWRTFirst1AndSecond2Argument.  Now it produces the same result as the fd approximation at least in for S^1

[[Imported from SVN: r7066]]

[[Imported from SVN: r7065]]

[[Imported from SVN: r7064]]

[[Imported from SVN: r7063]]

[[Imported from SVN: r7062]]

[[Imported from SVN: r7061]]

[[Imported from SVN: r7060]]

[[Imported from SVN: r7059]]

[[Imported from SVN: r7058]]

[[Imported from SVN: r7057]]

So far this only works for a single rod and a single continuum

[[Imported from SVN: r7056]]

[[Imported from SVN: r7055]]

[[Imported from SVN: r7053]]

[[Imported from SVN: r7052]]

[[Imported from SVN: r7051]]