[loc] set up Windows Store listing translations (part 2)

* Add PowerShell script to generate listing.csv
* Also update relevant messages along with French translation

res/appstore/listing/.editorconfig

@@ -1,8 +0,0 @@
-# indicate this is the root of the project
-root = true
-
-[*]
-charset = utf-8-bom
-insert_final_newline = true
-indent_style = space
-trim_trailing_whitespace = true

res/appstore/listing/runme.ps1

@@ -1,31 +0,0 @@
-# PowerShell script to parse listing.csv and retrieve our screenshots
-try {
-  [Console]::OutputEncoding = [System.Text.Encoding]::UTF8
-} catch {}
-
-# NB: All languages IDs from the .csv are lowercase version of the one
-# from rufus.loc, except for 'sr-RS' that becomes 'sr-latn-rs'. 
-
-function GetCellByName([object]$csv, [string]$row_name, [string]$column_name)
-{
-  foreach ($row in $csv | Where-Object {$_.Field -eq $row_name}) {
-    foreach ($column in $row.PSObject.properties) {
-      if ($column.name -eq $column_name) {
-        return $column.value
-      }
-    }
-  }
-  return [string]::Empty
-} 
-
-$csv = Import-Csv -Path .\listing.csv
-$langs = $csv | Select-Object -First 1 | Select * -ExcludeProperty 'Field','ID','Type (Type)','default' | ForEach-Object { $_.PSObject.Properties } | Select-Object -ExpandProperty Name
-
-foreach ($lang in $langs) {
-  $null = New-Item $lang -ItemType Directory -Force
-  $url = GetCellByName $csv 'DesktopScreenshot1' $lang
-  # Annoying but heck if I'm gonna bother with Microsoft's Auth in PowerShell...
-  Start-Process -NoNewWindow -FilePath "C:\Program Files\Mozilla Firefox\firefox.exe" -ArgumentList "-new-tab $url"
-  Write-Host $lang;
-  $null = $Host.UI.RawUI.ReadKey('NoEcho,IncludeKeyDown');
-}