Summary: Revert changes to flex-basis as it broke some specific layouts. Will update later with a more comprehensive set of tests
Differential Revision: D3776987
fbshipit-source-id: 06bd154a36f895782f45511cd8cf49cc6d7cbe7d
Summary: Generate tests for flex-properties and fix bug where flex basis was not taken into account when parent main dimension was undefined.
Differential Revision: D3771513
fbshipit-source-id: 1b5edc7a28bb26217e8a6d10d1829d9031c3ae2e