[[Imported from SVN: r850]]

[[Imported from SVN: r846]]

- Factorize derivatives of directors in separate method
- sign fixes

[[Imported from SVN: r845]]

[[Imported from SVN: r843]]

[[Imported from SVN: r840]]

[[Imported from SVN: r839]]

[[Imported from SVN: r838]]

[[Imported from SVN: r837]]

[[Imported from SVN: r836]]

[[Imported from SVN: r835]]

[[Imported from SVN: r834]]

a first attempt at coupling a 3d object to a 1d object.  Contains the infrastructure to have both hessian matrices in one, but not the actual coupling entries

[[Imported from SVN: r833]]

[[Imported from SVN: r832]]

[[Imported from SVN: r831]]

[[Imported from SVN: r830]]

[[Imported from SVN: r819]]

[[Imported from SVN: r818]]

[[Imported from SVN: r817]]

[[Imported from SVN: r755]]

[[Imported from SVN: r754]]

[[Imported from SVN: r742]]

[[Imported from SVN: r741]]

[[Imported from SVN: r740]]

[[Imported from SVN: r739]]

[[Imported from SVN: r738]]

[[Imported from SVN: r737]]

[[Imported from SVN: r736]]

[[Imported from SVN: r713]]

[[Imported from SVN: r712]]

[[Imported from SVN: r665]]

[[Imported from SVN: r664]]

[[Imported from SVN: r663]]

[[Imported from SVN: r598]]

[[Imported from SVN: r597]]

[[Imported from SVN: r596]]

[[Imported from SVN: r594]]

[[Imported from SVN: r588]]

[[Imported from SVN: r533]]

[[Imported from SVN: r532]]

[[Imported from SVN: r531]]