phases: add support for deserialization

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
tests: add deserialization test

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
lib/simple_json_reader: unprotect special char in strings

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
Merge branch 'privat' into deserialization