Add db_comparator function into cyclus_tools
Merge branch 'cyclus_tools' into test_cyclus

Conflicts:
	tests/cyclus_tools.py
Add main regression test file for cyclus
Correct arguments of db_comparator function
Merge branch 'cyclus_tools' into test_cyclus
Correct error in the name of tests_cyclus.py
Corrected import statement in test_cyclus.py
Correct yield statements in test_cyclus.py
Merge branch 'cyclus_tools' into test_cyclus
Corrected db_comparator not to throw sys_exit() errors.
Close databases after comparing them.
Add inpro_low input file
Add inpro_low and its correspondent db into testcases
Remove output_temp.h5 only if it exists
Run comparison only if cyclus run successfully with a given input
Stylistic errors are corrected
Add comment file about requirements for tests to run
Renamed the readme file
False positive behavior is corrected
Replace assert_array_equal with array_equal in order to remove
try-except blocks