Displaying custom Text in Laucher

This and #75 kinda go together, as both are about customizing the homescreens text, its size and position.

Displaying custom text could be handy as:

• You can display Data you might need to remember (your phone number etc)

• You can specify custom date-formats (automatic string replacement of date formats)

Bonus:

• (as soon as that is implemented) you can fetch data from an api that you want to watch (with a format like %https://api.domain.com/?param=value ["selector1"]["selector2"]%)

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We'll se if I manage to implement the bonus part... it woulf be kinda nice though : )