Better consistency and minor frontend optimizations

This release is a small incremental update over previous release.

Release is primarily focused on improving tests coverage (76%+ for system in general) and small inconsistencies tweaks as well as usual set of bug fixes.
There were also some minor performance improvements on frontend (translations initialization, icons and tooltips rendering).

This is likely to be the last release of 5.x branch, see you in 6.x world:)

Security fixes:

• None

New components:

• None

New features:

• Added convenient property cs\Request::$regular_path

Updates:

• New upstream version of Composer

Fixes and small improvements:

• System:
  • Always set Content-Type header to application/json for API requests
  • Added convenient do_api_request() method for usage in tests
  • Only set Content-Language header for regular pages
  • Unnecessary validation already present in cs\User\Profile removed from API controller
  • Simplifications and small tweaks in cs\Request\Route
  • Do not forbid API access for users by default (this is really wrong)
  • Allow to set login to own email (corresponding tests added)
  • Support tricky situation when login was equal to email and then email changed, now login will be updated to new email as well
  • Fixed behavior of master-slave mirror selection in cs\DB class
  • Performance improvement in cs-icon element and in cs-unresolved feature
  • Reduce painting when showing tooltip
  • Use modern syntax of @apply
  • Improved performance of cs.Language initialization
  • Fix for email hash left in cache after user deletion
  • Fix for failed sign ins registration because of incorrect DB indexes
  • Small tweaks to sign in API
  • Simplify installer in order to not specify default values explicitly
  • Update cs\Config\Options to be usable even if system is not installed
  • Optimize modules list rendering
  • System/Page/rebuild_cache event doesn't actually have key parameter
  • Some HTML files converted to Pug
• Content
  • Use passive event listener in Content module in order to improve scrolling performance

Deprecations:

• None

Possible partial compatibility breaking (very unlikely, but still possible):

• cs-icon now only supports either one or two icons, but not more

Dropped backward compatibility:

• None

Latest builds on downloads page (details about installation process) or download source code and build it yourself