Changes to nested constraints

• 2017-07-06 14:44:57 UTC (mantkiew): tabs to spaces
• 2017-06-15 01:59:38 UTC (kbak): minor edit
• 2017-06-15 01:56:39 UTC (kbak): minor edit
• 2017-06-15 01:55:22 UTC (kbak): minor edit
• 2017-02-17 21:18:42 UTC (Michal Antkiewicz): readding whole wiki contents