* Support for almost full event search form (except page, limit and searchby parameres, which do not make sense).
* Redirection from Timeline search result page to Event search page and vice versa.
(Redmine issue: #4609)

Implemented prototype built-in help pages for events/sear4ch and events/show endpoints. Improved the help pluggable module to autodiscover help pages. Improved autogenerated Sphinx documentation for events pluggable module. (Redmine issue: #3361)

Added introduction section about user interface including some images. (Redmine issue: #3361)

This fixed the issue with Sphinx complaining about missing expected directories during build process. (Redmine issues: #3361 and #3387)