Updated mongoperf text describing sample run

Signed-off-by: kay <kay.kim@10gen.com>
Fixed typo

Signed-off-by: kay <kay.kim@10gen.com>
DOCS-4115: add clarification about the local database
DOCS-4045: write concern includes arbiters and is based on votes
build: remove unused configuration options, strip legacy makefile content
DOCS-4129: typo
DOCS-2742 kill index builds
DOCS-4062: Natural order clarification

Signed-off-by: kay <kay.kim@10gen.com>
trivial: fix typo in natural
primer: updated for new editions
build/conf: remove legacy compatibility code
DOCS-4133: subheading workaround steps
DOCS-4060: Clarify field name limits