Configuration: document the node.name option

See https://github.com/elasticsearch/elasticsearch/pull/1345 for the
rationale of visibly documenting this.
fix typo in tutorial
fix link
add link to transaction log
fix clear cache doc
Add SPM to Clients & Integration

Closes #221.
Fix small typos in community page
fix small typo in installation page
Merge pull request #223 from Paikan/patch-6

fix small typo in installation page
use code for 'false', it makes it more clear as it is at the beginning of the sentence
fix broken links in Clients & Integrations page
fix small typos in glossary page
Merge pull request #222 from Paikan/patch-4

Fix small typos in community page
add "no" as a valid false boolean value
Added the "JavaScript Web Applications and elasticsearch" article to /tutorials
Minor corrections to the "JavaScript Web Applications and elasticsearch" article
Added "Paramedic" to the plugins page
add 0.19.9 download
blog post for 0.19.9
updated docs for 0.19.9