DOP-1995: adds referenced images, fixes indentation & broken link, removes .gitignore cruft (#723)

* DOP-1995: add missing images from docs-assets and unexclude them via gitignore

* DOP-1995: fixes indentation errors and broken link

* undo unnecessary change

Author: schmalliso

.gitignore

@@ -1,17 +1,8 @@
 *.swp
 build/
 *pyc
-source/includes/table-*rst
 source/images/*
 DS_Store
 .DS_Store
 .#*
 *.bak
-source/images
-source/figures
-meta.yaml
-source/includes/hash.rst
-source/includes/table/
-source/includes/toc
-fabfile
-giza.log