Fixing documentation for call collect

The documentation mentioned "collect call", however the server
is sending "collect_calls". Fixed the documentation so it matches
reality.

PS This was correct in the older documentation, somehow it got
changed.
Redmine#3285: document bundlesmatching() function
Merge pull request #209 from tzz/feature/3285-bundlesmatching

Redmine#3285: document bundlesmatching() function
Merge pull request #196 from cduclos/call_collect

Fixing documentation for call collect
Redmine#3283: document variablesmatching and the new tag options of classesmatching
Adding notes to readfile(), subsequently to internal code update
Add style guideline for internal variables.
Merge pull request #210 from nickanderson/document/style_guide/internal_variables

Add style guideline for internal variables.
Add documentation for process table cache in state dir
Merge pull request #211 from nickanderson/document/state_cfprocs

Add documentation for process table cache in state dir
Merge pull request #208 from lpefferkorn/readfile_notes

Adding notes to readfile(), subsequently to internal code update
Merge pull request #207 from tzz/feature/3283-tags-classesmatching-variablesmatching

Redmine#3283: document variablesmatching and the new tag options of classesmatching
Redmine#3279: document storejson()
Merge pull request #213 from tzz/feature/3279-storejson

Redmine#3279: document storejson()
measurements: minor doc fixes
Add link to measurements type promises from cf-monitord component
Merge pull request #214 from nickanderson/cleanup/reference/components/cf-monitord

Add link to measurements type promises from cf-monitord component
Add tutorial template
Merge pull request #215 from nickanderson/tutorial_template

Add tutorial template
Split standard library documentation