[skins] Increase left padding of account-summary

Before:

After:

The left padding is used to shift the text to the right to let the place to the icon. The icon has a font-size of 1.5em whereas the parent only has a font-size of 1em. So to shift from the same width than the icon the parent must use width * 1.5, and the width equals 3. We add an extra em so the text is not stuck to the icon. The current value has no real meaning (I set it visually, hence the balance issue).