Convert the testing wiki page into a page in the documentation.
Testing documentation. Fix line wrapping.
Testing documentation:

* Tidy content in Python test suite section.
* Fix some formatting.
* Update some of the style from future to present tense.
Further tweaking of test documentation.
Split up the laundry list.
Make phrasing match other subpages.
Fix the Jenkins link, add a section on static testing
Testing documentation update.

Trim down section on unit testing.
Clarify section on concurrency testing.
General pass, tighten up wording.
Merge pull request #1091 from wiredtiger/testing-doc

Create testing documentation