page Trilinos::Sacado example documentation

Add the example 10 (templated functions) to the overview and some text on why to use it

add the example 9 (factor 0.5) to the background group

Link is broken

Check if factor 0.5 is also necessary for d_sigma / d_phi

clean up the documentation of the classes

use boldsymbol for tensors

It would be nice to use the data types from the Sacado_Wrapper for all the Sacado variables. But somehow the operators (multiply*, ...) seem to cause conflicts again.

Maybe add some more text on the linearization

try to merge the fad_double data type with this templated data type

Add the link to the ac.nz site