WineTest failure patterns

[Francois Gouget]

The new "failure patterns" pages are now complete:

* All results
  https://test.winehq.org/data/patterns.html
* TestBot's Windows VMs only
  https://test.winehq.org/data/patterns-tb-win.html
* TestBot's Wine VMs only
  https://test.winehq.org/data/patterns-tb-wine.html


The main additions are:

* The pages start with a bit of documentation.

* Before the tests there is now an 'overview' pattern showing the number 
  of failed test units for each machine. This is useful to detect when a 
  VM goes bad, for instance when Windows 10 decides to pop up a 'first 
  use' configuration dialog: that line will turn red. This can also 
  highlight machines that get worse results than their peers, and thus 
  warrant a check.
  You will also notice a couple of machines that only have a handful of 
  failures!

* For each test the pages link to related commits. For each commit they 
  show if it modified the test itself, a shared test resource or the 
  Wine module. This simplifies reviewing potential culprits when a test 
  starts failing.

* For each test the pages link to the related bugs. This simplifies 
  checking if someone has already analysed the bug or tried fixing it. 
  If the bug has a regression commit id, that commit is also shown as 
  such.

* The page also shows bugs for tests that have no failure. This 
  simplifies verifying that the bugs have been closed when a test is 
  fixed.


-- 
Francois Gouget <fgouget at codeweavers.com>