Wikipedia version tools

For existing tools, see https://kiwix.org/ and instead.

Additional documents

 * User requirements:
 * Specifications:
 * Software design document:
 * Test plan:
 * Documentation plan:
 * User interface design docs:
 * Schedule:
 * Task management:
 * Release management plan:
 * Communications plan:
 * Yuvaraj's GSoC notes
 * Status updates