Implement answers

[raucao]

At some point we want to show answers to phrases in addition to the explanation.

First, we need to move the current answers to the language key, so that this:

{
  swahili: "Mambo",
  luganda: "Oli otya",
  lugbara: "Mi ngoni",
  english: "How are you?",
  // answer: ["Poa - Cool", "Niko poa - I'm fine", luganda "Gyendi" lugbara "mamuke"],
  explanation: "maybe the most common greeting to start a great conversation"
}

... turns into something like this:

{
  swahili: {
     p: "Mambo",
     a: ["Poa - Cool", "Niko poa - I'm fine"]
  },
  luganda: {
     p: "Oli otya",
     a: ["Gyendi"]
  },
  lugbara: {
     p: "Mi ngoni",
     a: ["Mamuke"]
  },
  english: "How are you?",
  explanation: "maybe the most common greeting to start a great conversation"
}

When doing that, we then obviously need to change how the templates are rendered and the data for them is gathered a little bit.