[DOCS] Moved fielddata circuit breaker higher up the page
[DOCS] Tidied up cluster settings docs
Increased max map pages for systemd to align with init.d settings in packages
[DOCS] Fix default setting in circuit breaker documentation
[DOCS] Tidied up layout of setup docs
[DOCS] Tidied up the multi-indices docs
Added waiting for yellow cluster state in rest test

In order to prevent rare timing issue, where the creation
of an index happens in the cluster state too late and thus
results in empty mappings.
Don't fail plugin manager test when downloading an actual plugin
[DOCS] Added breaking changes in 1.0
[DOCS] Fixed asciidoc issue
release [1.0.0.RC1]
[DOCS] Minor changes to the breaking changes doc