[ThermoMechanics] support reloading of strains in restart

[MatL] Multi-phase/-component library.

A lot of changes are renames for consistency with OGS.

Splitting files, and rename them (dropping mp, p, c prefixes).

Extraction of the create* functions lead to single step initialization
of the Medium, Phase, Component, and Property objects.

Formatting and clang-tidy.
Improve const-correctness.

Remove unneeded Undefined property: The nullptr is probably sufficient
in the PropertyArray, which is an array of pointers, for the property to
be undefined.

Unify value/dValue/d2Value access.

[App] Remove requirement for media ids sequence.

Reorder public, protected, private sections.

Add missing ogs_file_param documentation lines in the code.

Tom Fischer authored 8 years ago and Lars Bilke committed 6 years ago

GocadNode will be derived from Node.

Dmitri Naumov authored 6 years ago and Lars Bilke committed 6 years ago

The call was simply missing in the assembleWithJacobian().

Lars Bilke authored 6 years ago and Dmitri Naumov committed 6 years ago

Closes #2308.

Optimize ctest runtime

Subdomain deactivation within time intervals

std::vector<std::size_t> _ids_of_active_elements.

 improvement in SerialExecutor