docs: port admin guide to sphinx

Change-Id: I1ce8ccfc440f4856a5b6db331fbd8695c09986c5
Improve BI and reporting docs

- detailed explanation of current Graphite gauges
- specific suggestions for tweaking BI queries
- describe the process for requesting new supported queries

Change-Id: I7336bd9fe365d5d5be20fe515e10f33ea71a1a37
Merge changes I7336bd9f,I1ce8ccfc into release-0.11

* changes:
  Improve BI and reporting docs
  docs: port admin guide to sphinx
docs: port user guide to sphinx

Change-Id: I3b7437afb7e78410507ebe6b5b84c66aed9e503f
docs: add missing system content from components.xml

The DocBook version of the Beaker Guide contained a file components.xml,
which was not referenced in the actual book and was mostly duplicate
content. It did have a few useful bits which belong on the Systems page
however.

This content is rescued from pub_doc/Beaker_Guide/en-US/components.xml
in commit bf25a01e.

Change-Id: I256320da751c3bbb0a4d6c4f232abc5683668d1f
docs: missed converting one HTML admonition

Change-Id: I9db8cb2248c2c72250372d1fd4486f79ab63032d
docs: fix a bunch of spelling errors

Change-Id: I2be6c6ec1547cf2c528134795935608cf7370c7a
fix queries to be more SQL92-compliant

Specifically we need to avoid grouping by expressions, or selecting
non-grouped non-aggregated columns. This way the queries should be
executable in Teiid.

Bug: 193142
Change-Id: I0858f4bc9b6e7a4992528cecc17685b92fe4bb18
Make the SQL dialect for supported queries explcit

Change-Id: Ic5592a36c354384a9dbd63e72c4dbfae975b33d4
more SQL92 compliance

GREATEST and LEAST are MySQL-isms.

Bug: 877264
Change-Id: Id98d565dd81c8b3c55bbbd3fcd45352c54b85c04
Make job-priority-changes-by-user more teiid friendly

Change-Id: I7c1601f3f77bdf9715a10affb6f7596ac13eb0e8
a few fixes for task-durations-by-arch.sql

Made it consistent with other reporting queries in terms of clamping
recipe-task ranges to the reporting range. Removed unneeded YEAR_MONTH
grouped expression. The resulting query doesn't use any MySQL-isms.

Bug: 877272
Change-Id: Ic5b834dd791ac1e3f6c95b9fda96a2788592500d
Guidelines for supported query development

Capturing today's IRC discussions in a more appropriate place.
Also note some of the common MySQL -> Teiid conversions

Change-Id: I8d2382ae58871d3ba0a2185de2090e5d3a1cbc16
Merge "Make job-priority-changes-by-user more teiid friendly" into release-0.11
Make job priority query more robust
Merge "Make the SQL dialect for supported queries explcit" into release-0.11
Merge "Guidelines for supported query development" into release-0.11
Merge "Make job priority query more robust" into release-0.11
Merge branch 'release-0.11' into develop