[tracker] (53 commits) ...Merge branch 'wip/carlosg/hotdoc' into 'master'

[Sam Thursfield <sthursfield src gnome org>]

Summary of changes:

  454b52c... meson: Adjust indentation (*)
  aacce55... docs: Generate reference manual with gi-docgen (*)
  16e461e... meson: Add gi-docgen as a subproject (*)
  e4d6e5d... docs: Move overview to markdown (*)
  13b35ed... docs: Port "implementation limits" document to markdown (*)
  dd78ca9... docs: Port "performance" docs to markdown (*)
  4bd6566... docs: Port "sparql functions" doc to markdown (*)
  93336a9... docs: Port "sparql and tracker" documentation to Markdown (*)
  36f0830... docs: Port "defining ontologies" documentation to markdown (*)
  d2e4500... docs: Port "examples" to markdown (*)
  6da928b... docs: Port "migrating 2.x to 3.x" to markdown (*)
  3edf533... docs: Drop "migrating 1.x to 2.x" docs (*)
  1a4b46a... docs: Finish porting of tutorial docs to Markdown (*)
  b8baf77... docs: Delete gtk-doc remnants (*)
  6b6214f... docs: Build again manpages and ontology docs (*)
  99ff643... docs: Rewrite data model of documentation tool (*)
  b4effff... docs: Refactor common utils to separate file (*)
  69f9fce... docs: Move all XML generation into a single file (*)
  c3b82a9... docs: Rename code file (*)
  8e8ad92... tools: Rename docgen executable (*)
  0b67c24... docs: Generalize class hierarchy creation further (*)
  da0c6a3... docs: Add documentation generation in markdown format (*)
  6e26175... ontologies: Add separate documentation file for RDFS (*)
  5bf212a... docs: Generate base ontology documentation for gi-docgen do (*)
  c5414ed... docs: Generate examples page with actual examples (*)
  5104257... tools: Adapt ontology docgen tool for hotdoc markdown speci (*)
  cd682ae... docs: Adapt markdown docs to hotdoc formatting specifics (*)
  94fb923... build: Use hotdoc to build documentation (*)
  a4466ae... Revert "meson: Add gi-docgen as a subproject" (*)
  8452c60... src: Remove needless <para> in API doc blurbs (*)
  c3c8738... libtracker-sparql: Add missing doc pieces (*)
  a32f0dc... docs: Set primary section on all markdown docs (*)
  d2f5c5a... docs: Add missing migration doc (*)
  043de63... docs: Include Nepomuk documentation in hotdoc (*)
  e9911c9... docs: Fix image locations (*)
  db325b6... docs: Move images so they are in a single folder (*)
  8a0aa0e... docs: Update references to code symbols for hotdoc (*)
  834c5e7... doc: Tweak hotdoc theme (*)
  37036e6... ci: Update fedora image with documentation tools (*)
  149b8a2... docs: Generate keywords helper file for markdown documentat (*)
  1531b05... docs: Install devhelp files (*)
  debfb82... ci: Make Rawhide failable (*)
  288b871... build: Make hotdoc target depend on ontology docs (*)
  ad94857... ci: Add glib2-doc to fedora image (*)
  c61ab74... ci: Isolate coverage job into its own build/test run (*)
  24c58d3... ci: Exclude generated boilerplate in coverage checks (*)
  9324fef... ci: Add intermediate job to build the website before deploy (*)
  c09d199... ci: Change src/dest dirs for hotdoc documentation (*)
  c7b5ea7... docs: Use lumen theme for documentation (*)
  e8cd89b... docs: Add online link for devhelp documentation (*)
  87bbf52... docs: Add some basic info about license/website on index (*)
  a6ea324... docs: Add link to website to top navigation bar in API docs (*)
  2a5a26e... Merge branch 'wip/carlosg/hotdoc' into 'master'

(*) This commit already existed in another branch; no separate mail sent