Merge pull request #97 from gawrysz/cosmetics

Cosmetics
Merge pull request #98 from gawrysz/optimizations

[mandelbrot] skipped unnecessary and costly reinitialization of initial conditions in AMR setup
Fix OoB in particle mapping
Fix invalid write
[pmap_test] some parts of init_problem are meant to be run only once
Initialize *ijkp* properly for map_tsc
Merge pull request #99 from Xarthisius/pmap_test

Couple of fixes for particles
[piernik_setup] some echo implementations don't understand -e switch
Merge pull request #100 from Xarthisius/master

[piernik_setup] some echo implementations don't understand -e switch
Add 'sgpt' to default hdf5 fields. Use correct code2cgs factor for gravitational potential written to gdf
Merge pull request #101 from Xarthisius/sgpt_hdf5

Add 'sgpt' to default hdf5 fields.
Fix all python scipts' shebangs
Merge pull request #102 from Xarthisius/python_shebang

Fix all python scipts' shebangs
[cg_level_connected] prepared stub routine for finding fine-coarse exchanges in a SFC way