Add mpi import in converter_tools (related to issue #23)
Declare variable before bcast
[API] Changed form of shells and corr_shells to list of dicts.
Updated template script
Simplify SK construction

* recompute maps every time SK called rather than saving them
* user saves and feeds in chemical potential and dc manually
* set_dc sets dc to known values (eg from previous calculations) while calc_dc computes them
* find_mu -> calc_mu to match API for other functions
Fix typo in routine name convert_dmft_input
Divide transport into appropriate files

Put functions of the initial transport files to the appropriate places in
wien2k_converter and sumk_dft_tools
Case Sigma=0 included (LDA_only)

Some other minor corrections.
Change names, correct some issues in merge

Simplify writing/reading from h5
API changes
Added new test case for transport code, some other minor changes
Add transport test to CMakeLists.txt