Add external host and SSL

Adds external host flag -h string and SSL flag -s as a boolean to gex.

Add Gas Tabs

• Latest block is just one of many widgets
• Info on Gas widgets split in 4 widgets
• Donut chart for block creation

Add new tabs

Version 1.1
Improve code basis, change validators tab with block round tab
Add network and seconds per block info

GEX Dashboard

In terminal Dashboard for Cosmos SDK