GRN2-xx: Added port to database configuration (bigbluebutton#1550)

* GRN2-XX: Added port to database configuration

* GRN2-XX: Added port to database configuration

GRN2-xx: Restructured email verification and password reset (bigblueb…

…utton#1444)

* Restructured email verification and password reset

* Fixed issue with password reset

Co-authored-by: Jesus Federico <[email protected]>

Release: Major 2, Minor 5, Revision 4

Translate /config/locales/en.yml in es_MX (bigbluebutton#1167)

translation completed for the source file '/config/locales/en.yml'
on the 'es_MX' language.

Co-authored-by: transifex-integration[bot] <43880903+transifex-integration[bot]@users.noreply.github.com>

Fixed issue with adding roles (bigbluebutton#1051)

allow for mail system without authentication (bigbluebutton#1019)

* allow for mail system without authentication

* try to fix travis build

Translate /config/locales/en.yml in zh_CN (bigbluebutton#980)

translation completed for the source file '/config/locales/en.yml'
on the 'zh_CN' language.

Co-authored-by: Jesus Federico <[email protected]>

Merge pull request bigbluebutton#971 from bigbluebutton/v2.5-alpha

Release v2.5

Release: Major 2, Minor 4, Revision 2

Release: Major 2, Minor 4, Revision 2, Release Candidate 1