make sure the fd hessian is symmetric; hardwire Dexp(0) for more speed; use symmetry when computing the differential of the geodesic interpolation

[[Imported from SVN: r2016]]

[[Imported from SVN: r2015]]

[[Imported from SVN: r2014]]

[[Imported from SVN: r2013]]

[[Imported from SVN: r2012]]

[[Imported from SVN: r2011]]

[[Imported from SVN: r2010]]

[[Imported from SVN: r2008]]

[[Imported from SVN: r2007]]

[[Imported from SVN: r1891]]

add a new method which averages out a dg function in order to obtain a p1 function.  This is used to pass Neumann data coming from a rod to the hierarchic error estimator

[[Imported from SVN: r1866]]

[[Imported from SVN: r1865]]

[[Imported from SVN: r1793]]

[[Imported from SVN: r1792]]

[[Imported from SVN: r1791]]

[[Imported from SVN: r1790]]

[[Imported from SVN: r1775]]

[[Imported from SVN: r1773]]

[[Imported from SVN: r1772]]

[[Imported from SVN: r1771]]

[[Imported from SVN: r1770]]

[[Imported from SVN: r1769]]

[[Imported from SVN: r1768]]

[[Imported from SVN: r1767]]

[[Imported from SVN: r1766]]

[[Imported from SVN: r1719]]

[[Imported from SVN: r1718]]

[[Imported from SVN: r1717]]

[[Imported from SVN: r1716]]

[[Imported from SVN: r1715]]

moved the quadrature orders for bending and shear stuff into the header, as a first step towards reduced integration

[[Imported from SVN: r1714]]

[[Imported from SVN: r1713]]

[[Imported from SVN: r1712]]

[[Imported from SVN: r1711]]

[[Imported from SVN: r1710]]

[[Imported from SVN: r1709]]

[[Imported from SVN: r1708]]

[[Imported from SVN: r1703]]

[[Imported from SVN: r1702]]

[[Imported from SVN: r1701]]