tasks #7081: Index custom date metadata

 * Extract build of date data in DataFactory
 * Extract build of date type for mapping in DataFactory
 * Extract build of text data in DataFactory

Change-Id: I68e41d08d7e4568e267f6d5d2ea6c1ddfbb79a20
Merge commit 'refs/changes/63/2663/3' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  tasks #7081: Index custom date metadata

Change-Id: Iee1c68e3c91d3c1a9dd8d53b9b4c3f4108a325fd
This is Tuleap 7.1.99.46

Change-Id: I0b068585a51a3f57938cd40330e92485b9c20e8e