Introduced global objects grid_col_major and grid_row_major.
Merge remote-tracking branch 'origin/develop' into develop
Fixed solver and grid tests
Add initial test for distributed_matrix.
Added wrapper for elpa
Merge branch 'develop' into test_distributed_matrix

Conflicts:
	test/CMakeLists.txt
Fix grid change.
added elpa wrapper
added elpa wrapper
Merge remote-tracking branch 'origin/develop' into develop
Add get_* functions.
Test (0,0) element of Frank matrix.
Merge branch 'test_distributed_matrix' into develop
not yet completed wrapper for elpa
Merge remote-tracking branch 'origin/develop' into develop