[Button spacing] Too much spacing for Text buttons on different screens

[yshwanth]

App version: 0.1.98-1.0

• On Import Pub screen , label your wallet and import buttons
• On Broadcast screen, Upload file font should be small
• On Network fees,Custom fee space should be minimized as its a number
• On Settings , Currency should be on right side rather down currency header
• On Receive Address label, space should be minimised for both save and text field
• On Receive request payment, space should be small for save and text fields