This adds the `StatusIconTabButton` componoent to `StatusQ` with some slight
adjustments:
- removes `iconColor` in favour of `icon.color`
- removes `disabledColor` (main reason being that we don't show disabled buttons of this type)
This button handles various cases:
1. Icon tab buttons - An icon button used in Status Desktop for different sections
2. Letter identicon button - Used for community sections that don't have a profile picture
3. Image icon button - Used for community sections that do have a profile picture
Which type is rendered depends on the configuration of the component as shown
in the usage.
Usage:
```
import StatusQ.Controls 0.1
// When `icon.name` is set, it renders a `StatusIcon` button
StatusIconTabButton {
icon.name: "chat"
}
// When `icon.source` is set, it renders a `StatusRoundedImage` button
StatusIconTabButton {
icon.source: "https://pbs.twimg.com/profile_images/1369221718338895873/T_5fny6o_400x400.jpg"
}
// When `name` is set, it renders a `StatusLetterIdenticon` button
StatusIconTabButton {
name: "#status"
}
```
Closes#16
Pascal Precht
