Revert commits

This reverts commit 1f4e411a5e8a5dc0481cc86bf08b60c974d424a0.
This reverts commit f20311f2191051bf4da296f34bfb5b33ead0613d.
This reverts commit ed112b804dd8570ee675608ac90cdb18a8be06ae.
This reverts commit 88fac7769d1656611ed0c494f4519591109b52d4.
This reverts commit b558f2417de4b8c1ca5af8cbbc164a55ae97ffc2.
Add ReST-markup