Revert an accidental locstring change

384d2558 mistakenly altered the locstring; revert it.
Re-generate po files
Explicitly specify the plural, to help lead translators to do so

Translators may not be familiar with the %quant() form, and may simply
translate it as-is -- including only specifying the singular form.
Unless the language happens to pluralize by adding a trailing "s", this
will result in incorrect plural forms.

Help suggest that the language should specify both singular and plural
forms by doing so in English.  This does not change the English
pluralizations in any way, but instead serves to lead the translator to
do so in cases where it would be necessary.
Add missing # loc() for time worked transactions
Use quant, even when the value is guaranteedly plural

While in all of these cases, the number in question is guaranteedly
plural, non-English languages may have more interesting rules for
pluralization nouns than simply "singular" or "plural."  As such, use
quant() even when the value in noun form is invariant in English.
Use the existing localization of minute(s), rather than adding a new one
Switch to an implementation which does not use variable interpolation

This makes the locstrings actually translatable.  Fixes I#29798
Per Locale::Maketext, quant should include the number, formatted with numf
Remove now-incorrect %1s in cs.po

Multiple locstrings in cs.po attempted to work around the lack of number
in %quant() by adding it themselves.  Remove it, now that %quant() adds
it, and replace the %quant() calls that depended on the lack of number
with equivalent %numerate calls.

Fixes I#29741.
Clarify logic of numerate in RT::I18N::cs
Drop RT::I18N::cs->numf, as it is just a copy of Locale::Maketext's
RT::I18N::ru->quant should call numf on the number, as Locale::Maketext does
Remove right names from po files, as they are no longer translated

As of 44b54b24, we no longer localize the internal right names.  Drop
them from the existing po files.  This removes the following locstrings:
    AdminClass
    AdminCustomField
    AdminCustomFieldValues
    AdminGroup
    AdminGroupMembership
    AdminQueue
    AdminTopics
    AdminUsers
    AssignCustomFields
    CommentOnTicket
    CreateArticle
    CreateDashboard
    CreateGroupDashboard
    CreateOwnDashboard
    CreateSavedSearch
    CreateTicket
    DeleteArticle
    DeleteDashboard
    DeleteGroupDashboard
    DeleteOwnDashboard
    DeleteTicket
    EditSavedSearches
    ExecuteCode
    ForwardMessage
    LoadSavedSearch
    ModifyACL
    ModifyArticle
    ModifyArticleTopics
    ModifyCustomField
    ModifyDashboard
    ModifyGroupDashboard
    ModifyOwnDashboard
    ModifyOwnMembership
    ModifyQueueWatchers
    ModifyScrips
    ModifySelf
    ModifyTemplate
    ModifyTicket
    OwnTicket
    ReplyToTicket
    SeeClass
    SeeCustomField
    SeeDashboard
    SeeGroup
    SeeGroupDashboard
    SeeOwnDashboard
    SeeQueue
    ShowACL
    ShowApprovalsTab
    ShowArticle
    ShowArticleHistory
    ShowConfigTab
    ShowGlobalTemplates
    ShowOutgoingEmail
    ShowSavedSearches
    ShowScrips
    ShowTemplate
    ShowTicket
    ShowTicketComments
    StealTicket
    SubscribeDashboard
    SuperUser
    TakeTicket
    Watch
    WatchAsAdminCc
Remove identity translations

These serve only to bloat the po file, and cause dangling "NOT FOUND IN
SOURCE" translations if the msgid is later removed.  In the case of
en_GB, they hide the actual translation changes.
Unescape "\"s in strings when extracting

This does not affect any current locstrings.
Prevent false-positives in "Interpolated variable..." warnings by remembering quotes
Merge two nigh-identical locstrings
Switch to including "bytes," to differentiate "month" from "metabyte"

Fixes I#29812.
Add locstrings for datetime groupings

Fixes I#29695.
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