Russian translation update, for master

[ValdikSS]

OlesyaGerasimenko's squashed update from #852 + my changes. The same as #894, accidental repo deletion.

For master.

[zdohnal]

The same as for master branch.

[ValdikSS]

The same as for master branch.

Updated.

[ValdikSS]

Any comments, updates?

[zdohnal]

Upper case - lower case issue in msgid the same as in 2.4.x (uppercase msgids are the ones present in the code) - please add the uppercase ones and comment out lowercase ones, as it was in the past.

Missing "successful" in "%s: Error - need "completed", "not-completed", or "all" after "-W"", see the original locale/cups_ru.po.

Missing "Scheduler is not running".
Missing " --list-all List all filters with the MIME media types."
Missing "Attribute "%s" has empty value."
Missing "Bad device URI "%s"."
Missing "Bad extKeyUsage extension in X.509 certificate request."
Missing "Bad keyUsage extension in X.509 certificate request."
Missing "Bad subjectAltName extension in X.509 certificate request."
Missing "Couldn't resolve mDNS URI "%s"."
Missing "Credentials are not CA-signed."
Missing "Form data too large."
Missing "IPP Everywhere driver requires an IPP connection."
Missing "IPP member attribute outside of collection."
Missing "Invalid JSON data."
Missing "Invalid JSON web token."
Missing "Invalid form data."
Missing "JSON file too large."
Missing "No printer-uri-supported attribute."
Missing "Only WGS-84 coordinates are supported."
Missing "Unable to add extension to X.509 certificate."
Missing "Unable to allocate IPP attribute."
Missing "Unable to allocate memory for printer: %s" (": %s" is missing)
Missing "Unable to commit PPD file: %s"
Missing "Unable to configure private key context."
Missing "Unable to connect to %s:%d: %s"
Missing "Unable to create PPD for printer: %s"
Missing "Unable to create PPD: %s"
Missing "Unable to create private key context."
Missing "Unable to create X.509 certificate signing request."
Missing "Unable to create X.509 certificate."
Missing "Unable to create private key context."
Missing "Unable to create private key."
Missing "Unable to finish request."
Missing "Unable to import X.509 certificate request."
Missing "Unable to import credentials."
Missing "Unable to initialize private key context."
Missing "Unable to load X.509 CA certificate and private key."
Missing "Unable to read generated PPD: %s"
Missing "Unable to read response."
Missing "Unable to reallocate IPP attribute value."
Missing "Unable to run cups-driverd: %s"
Missing "Unable to save PPD file: %s"
Missing "Unable to save value for "%s" with a temporary printer."
Missing "Unable to verify X.509 certificate request."
Missing "Unable to write X.509 certificate signing request."
Missing "Unable to write X.509 certificate."
Missing "Unable to write private key."
Missing "Unsupported URI scheme."
Missing "Validation of subjectAltName in X.509 certificate request failed."
Missing "cups-driverd failed to get PPD file - see error_log for details."
Missing "ipptool: Unable to allocate memory: %s"
Missing "number-up-layout"
Missing "number-up-layout.btlr"
Missing "number-up-layout.btrl"
Missing "number-up-layout.lrbt"
Missing "number-up-layout.lrtb"
Missing "number-up-layout.rlbt"
Missing "number-up-layout.rltb"
Missing "number-up-layout.tblr"
Missing "number-up-layout.tbrl"
Missing "page-border"
Missing "page-border.double"
Missing "page-border.double-thick"
Missing "page-border.none"
Missing "page-border.single"
Missing "page-border.single-thick"
Missing "page-set"
Missing "page-set.all"
Missing "page-set.even"
Missing "page-set.odd"
Missing "position"
Missing "position.bottom"
Missing "position.bottom-left"
Missing "position.bottom-right"
Missing "position.center"
Missing "position.left"
Missing "position.right"
Missing "position.top"
Missing "position.top-left"
Missing "position.top-right"

Probably most missing msgids can be fixed by rebasing the PR to master branch, in case you don't want to translate them.

The following strings are commented out in other localizations, because the msgid is not used anywhere in the code - it would be great if you commented them out by adding #~ at the beginning of lines related to the following strings, and ideally let them be in the same places as they were before PR:

"%s: Unable to create PPD file: %s"
"%s: Sorry, no encryption support."
"%s: Unable to query printer: %s"
"Booklet"
"Draft"
"Finishing Preset"
"Fold"
"IPP extension tag larger than 0x7FFFFFFF."
"Looking for printer."
"No common name specified."
"None"
"Print Quality"
"Punch"
"Set Publishing"
"Staple"
"Unable to change printer-is-shared attribute"
"Unable to copy PPD file."
"Unable to create credentials from array."
"Unable to establish a secure connection to host (%d)."
"Unable to establish a secure connection to host (certificate chain invalid)."
"Unable to establish a secure connection to host (expired certificate)."
"Unable to establish a secure connection to host (host name mismatch)."
"Unable to establish a secure connection to host (peer dropped connection before responding"
"Unable to establish a secure connection to host (self-signed certificate)."
"Unable to establish a secure connection to host (untrusted certificate)."
"Unable to establish a secure connection to host."
"Unable to find printer."
"Unable to find server credentials."
"Unable to register "%s.%s": %d"
"Unknown directive "%s" on line %d of "%s" ignored."
"ippeveprinter: Unable to open "%s": %s on line %d."
"ippfind: Unable to browse or resolve: %s"
"ippfind: Unable to use Bonjour: %s"

[zdohnal]

Please commit the changes as an additional commit, do not squash commits. Thank you in advance!