Beats doc refactoring and restructuring

[dedemorton]

This meta issue lists all refactoring efforts that are required. These efforts might impact projects that reuse content from libbeat:

libbeat

• Break source file for outputs (outputs.asciidoc) into multiple files: Restructuring: Break source file for outputs (outputs.asciidoc) into multiple files #8492
• Break processor file into multiple files. [DOCS] Create separate topics for processor docs #14410
• Move command reference to top level in the navigation: Restructuring: Move command reference to top level in the navigation #7739
• Clean up conditional coding in doc files: Restructuring: Clean up conditional coding in doc files #6813
• Remove conditional coding for attributes that are no longer used by APM.
• Clean up TOC entries for config sections: Clean up TOC entries for config sections #6188
• Cleanup and reconcile shared attribute definitions used in the docs: Restructuring: Cleanup and reconcile shared attribute definitions used in the docs #6144
• Organize libbeat files logically into folders and rename for consistency: Restructuring: organize libbeat files logically into folders and rename for consistency #8496
• Improve organization of the processor docs: Improve organization of processor docs #7486
• Fix the part/chapter structure of the books: Restructing: Fix the part/chapter structure of the books #8494
• Clean up product references (use attributes)

Heartbeat

• Break heartbeat monitor docs into separate sections: Restructuring: Break heartbeat monitor docs into separate sections #7234

Metricbeat

• Improve config docs for modules by using shared file for common options: Restructuring: Improve config docs for modules by using shared file for common options #7160

Functionbeat

• Create separate topics for different function types: Restructuring: Create separate topics for different function types #13908

All beats

• Use attribute to resolve libbeat paths: use attribute to resolve libbeat paths: Restructuring: use attribute to resolve libbeat paths #8578
• Improve reference content about configuration options (so it works better with CM UI). Restructuring: Improve reference content about configuration options #9363
• Refactor attributes to use consistent naming and provide consistent IDs settings. See the related comment here: Add Logstash output to functionbeat and refactor Logstash output docs #13818 (comment)

[dedemorton]

Closing this meta issue because we will not be refactoring the Beats documentation.