Remove sections that try to inline API doc into the reference guide.
The RPC server code necessary for this was part of the old PHP API viewer,
but apparently it was broken a long time ago, and is not even implemented
in the new API viewer (called DAPI).
fix many spelling errors/typos
formatting fixes
fix broken links
Remove links to pages that we wish existed, but that don't actually exist.

Links were:
- build/htmlToProfile
- build/relocatingPackages
- build/transforms/writeCss
- dojo/_base/browser
- dojo/load
- dojo/loadInit
- dojox/calc
- dojox/css3
- dojox/data/CdfStore
- dojox/data/ItemExplorer
- dojox/data/JsonQueryRestStore
- dojox/data/SnapLogicStore
- dojox/data/StoreExplorer
- dojox/data/util/JsonQuery
- dojox/date/php
- dojox/date/posix
- dojox/date/timezone
- dojox/dnd
- dojox/form/DayTextBox
- dojox/form/FileInputAuto
- dojox/form/FileInputBlind
- dojox/form/MonthTextBox
- dojox/form/RadioStack
- dojox/form/RadioStack
- dojox/form/TriStateCheckBox
- dojox/form/YearTextBox
- dojox/fx/Shadow
- dojox/fx/flip
- dojox/fx/scroll
- dojox/fx/split
- dojox/fx/style
- dojox/fx/text
- dojox/gfx/Circle
- dojox/gfx/Ellipse
- dojox/gfx/Group
- dojox/gfx/Image
- dojox/gfx/Line
- dojox/gfx/Path
- dojox/gfx/Polyline
- dojox/gfx/Rectangle
- dojox/gfx/Surface
- dojox/gfx/Text
- dojox/gfx/TextPath
- dojox/gfx/matrix
- dojox/gfx/utils/deserialize
- dojox/io/proxy/xip
- dojox/jq
- dojox/jsonPath
- dojox/jsonPath
- dojox/layout/BorderContainer
- dojox/layout/Dock
- dojox/layout/GridContainerLite
- dojox/layout/dnd
- dojox/layout/ext-dijit/layout
- dojox/mobile/EdgeToEdgeList#editable-list-example
- dojox/mobile/TimeSpinner
- dojox/rails
- dojox/robot/recorder
- dojox/sketch
- dojox/socket/Reconnect
- dojox/testing/DocTest
- dojox/widget/Calendar2Pane
- dojox/widget/Calendar3Pane
- dojox/widget/CalendarFisheye
- dojox/widget/DailyCalendar
- dojox/widget/FeedPortlet
- dojox/widget/FisheyeListItem
- dojox/widget/MonthAndYearlyCalendar
- dojox/widget/MonthlyCalendar
- dojox/widget/MultiSelectCalendar
- dojox/widget/PortletDialogSettings
- dojox/widget/PortletSettings
- dojox/widget/Selection
- dojox/widget/YearlyCalendar
- dojox/wire/ml
- loader/amd#context-sensitive-require
update instructions to build reference doc