Split "Get in touch" into separate "Support" and "Social Media" headings
Split "Get in touch" into separate "Support" and "Social Media" headings

- Create separate sections for support and social media.

- Replace tabular format with paragraphs.

- For IRC, remove the link to freenode and only link to the channel
  log. IRC-savvy users will be using their own client anyway.

Change-Id: Id7514a1a1698ca632e3e545fc157110d0c1461b4

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