Fix popularity data submission in the backend FS#2808

The POST data contained the raw data instead of an array with the data
that should be submitted like in the requests from the browser. The
serve

Fix popularity data submission in the backend FS#2808

The POST data contained the raw data instead of an array with the data
that should be submitted like in the requests from the browser. The
server backend has been fixed to be able to process both versions.

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Hungarian language update

Polish language update

Korean language update

Brazilian Portuguese language update

Informal German language update

add newest plugin types to info plugin

Swedish language update

correctly count deleted users in plain auth FS#2800

reloading the user list after the delete action will make sure the count
is always correct.

AUTH_PASSWORD_GENERATE event added

This is needed to replace the password generator by a plugin
implementation. Related to PR #166 and FS#2147

fix problem when ldap returns no groups FS#2788

fix ldap deref option FS2798

Do not pass timelimit and deref settings to ldap_search. These values
should be set globally via ldap_set_option() instead (as we do for
deref).

treat empty AD credentials as NULL values FS#2781

Korean language update

fixed references from old mysql authtype to new mysql plugin in mysql.conf example

fixed broken default config options (FS#2789)

updated dates in templates' and plugins' info.txt files

Japanese language update

Czech language update

Russian language update

Japanese language update

authad: capabilities depend on userdomain specific config

authad: added compatibility for old option names

adLDAP renamed the ad_username and ad_password to admin_username
admin_password recently. this makes our backend recognize the old
settings

authad: don't request empty fields

fix expiry check for adLDAP version FS#2759