Substance ids renamed and moved as vector into SorptionBase.
Fix bug - wrong behaviour when unknown region is in input.
Copy DLL libraries into Cygwin install package.
Dual porosity test update.

- create new mesh - coarse square
- replace reference data
- compare with analytical solution (dual porosity only - dual_por.con)
Merge branch '1.8.0_master' of https://github.com/flow123d/flow123d into 1.8.0_master
Time dependent parameter test (in 23) added for DualPorosity.
Cleanup in filed_intersection

- remove dead code
- move ngh interface to separate header file
Merge branch '1.8.0_master' of github.com:flow123d/flow123d into 1.8.0_master
Cleanup in global_defs

- remove obsolete macros, leavin just ASSERT and DGB* macros
Fixed internal links in reference manual.
Fixes #159.
Merge branch 'JS_1.8.0' into 1.8.0_master
Fix detection of fetch URL.

Close #155.
Remove get_solution_vector and get_parallel_solution_vector.

- empty implementation of these in EquationBase
- removed from descendants (transport, reactions)
- clean ReactionTerm class
Avoid misleading message from "ulimit" command.
Remove debug messages.
Creating help for PETSc parameters.

- add support for redirecting whole PETSc output
- add make rule to run flow123d and extract PETSc help
Merge branch '1.8.0_master' of github.com:flow123d/flow123d into 1.8.0_master
Merge branch 'master' into 1.8.0_master
Fix system.hh for case without HAVE_PETSC
Replace get_field by operator[].

- overload operator[] (returns reference, and throws for unknown name)
- field() method returns pointer (nullptr if not found)