Fix-outdated-content-on-using-smartphones-securely-page

Changes I did and did not make (indicated by checked boxes below; I'm using the checklist for myself and this should not be considered a to-do list):

• Amharic
  • whole language unmaintained; will address removal in subsequent ticket
• Arabic
  • Changed Redphone link and name to refer to Signal
  • Removed references to Riseup Black and Red
  • Linked instead to Riseup VPN on Riseup's page
  • Could not remove reference to Wire, as I do not read or speak Arabic
  • Page still refers to Orbot
• Tibetan
  • whole language unmaintained; will address removal in subsequent ticket
• English
  • Changed Redphone link to refer to Signal
  • Removed references to Riseup Black and Red
  • Linked instead to Riseup VPN on Riseup's page
  • Replaced reference to Wire with links to Delta Chat and Element
  • Did not know how to approach removing Orbot content
• Spanish
  • Changed Redphone link to refer to Signal
  • Removed references to Riseup Black and Red
  • Linked instead to Riseup VPN on Riseup's page
  • Replaced reference to Wire with links to Delta Chat and Element
  • Did not know how to approach removing Orbot content
• Farsi
  • Guide marked as unmaintained; will address removal in subsequent ticket
• French
  • Guide marked as unmaintained, but because I speak the language...
  • Removed all references to Redphone entirely
  • Removed "Other VOIP" section. CSipSimple page 404s now. Guardian Project has sunset OSTEL/OSTN and they say the domains will expire soon. Remaining links to these projects present a nice juicy attack vector for someone who wants to get at our community.
  • Still discusses Skype, Textsecure.
  • Strongly recommend removing entire guide; will address removal in subsequent ticket
• Indonesian
  • Changed Redphone link and name to refer to Signal
  • Removed references to Riseup Black and Red
  • Linked instead to Riseup VPN on Riseup's page
  • Removed reference to Wire as I felt I could tell where the sentence began and ended
  • did not add references to Delta Chat or Element
  • Page still refers to Orbot
• Khmer
  • whole language unmaintained; will address removal in subsequent ticket
• Macedonian
  • whole language unmaintained; will address removal in subsequent ticket
• Burmese
  • whole language unmaintained; will address removal in subsequent ticket
• Portuguese
  • Changed Redphone link and name to refer to Signal
  • Removed references to Riseup Black and Red
  • Linked instead to Riseup VPN on Riseup's page
  • Replaced reference to Wire with links to Delta Chat and Element
  • Page still refers to Orbot
• Russian
  • Changed Redphone link and name to refer to Signal
  • Removed references to Riseup Black and Red
  • Linked instead to Riseup VPN on Riseup's page
  • Replaced reference to Wire with links to Delta Chat and Element (sentence was constructed so that was easy to not screw up)
  • Page still refers to Orbot
• Thai
  • Guide marked as unmaintained; will address removal in subsequent ticket
• Turkish
  • Guide marked as unmaintained; will address removal in subsequent ticket
• Vietnamese
  • Guide marked as unmaintained; will address removal in subsequent ticket
• Chinese
  • Guide marked as unmaintained; will address removal in subsequent ticket

Update content/ar/guide/smartphones/index.md, content/en/guide/smartphones/index.md, content/es/guide/smartphones/index.md, content/fr/guide/smartphones/index.md, content/id/guide/smartphones/index.md, content/pt/guide/smartphones/index.md, content/ru/guide/smartphones/index.md files

soundtrack: https://www.youtube.com/watch?v=en88_IEcQwU https://www.youtube.com/watch?v=5LPa9M4Cjm0