New features

Issue #2832589 by kpv: Voting not recorded. Fixed coding standards.
Issue #2935545 by kala4ek: Deprecated constant REQUEST_TIME.
Issue #2846341 by benjifisher: Different anonymous users cannot vote separately.
Issue #2765217 by Shreya Shetty: Use the OO t in VoteTypeForm.
Issue #2941917 by steveoliver: Missing config schema.
Issue #2747243 by rajeshwari10, neha.gangwar: Remove @file tag from all the .php files.
Issue #2872435 by sylus: Voting API: Getting an access denied or 403 response using GET method.
Fixed the coding standards.

Issue #2609136 by heykarthikwithu: Add @param values and @return types in the code base. Issue #2844706 by dbt102: Add_VotingAPI_Help.
Fixed the coding standards.

Added browserlistrc file, updated browsers, added postcss-flexbugs-fixes npm plugin, regenerated css files

This release is compatible with Social Auth Beta 4

This release is compatible with Social Auth Beta 4

This release is compatible with Social Auth Beta 4