Customizable label for the deposit chain

[akolotov]

The block details contains the information about the latest inspected block from the chain where deposits can be originated. Make the label in this section configurable as so it could refer, for example, to the xDai chain.

[rimrakhimov]

Am I right that the only task here is to replace "Eth 1 Data" label with "{chainLabel} Data" where chainData is a configurable variable?