Add more entries for Tier2

[akatsoulas]

No description provided.

[akatsoulas]

When this is merged, we need to manually add the updated entries through the admin interface

[escattone]

Should the products for the following topics also include thunderbird-for-android since they already include thunderbird?

• crashing-and-slow-performance
• search-tag-and-share
• search under search-tag-and-share
• settings
• import-and-export-settings under settings
• customization under settings
• autofill under settings
• languages under settings
• add-ons-extensions-and-themes under settings
• notifications under settings
• security under privacy-and-security
• account-management
• junk-mail-and-spam
• attachments