common(ui): Overall ui issues

[Hemanthghs]

Summary

• Adjust side navbar fix(ui): sidebar review changes #955
  (Make it responsive and fixed without scrolling)

• In top nav bar display account name as tooltip on hover fix(ui): sidebar review changes #955

• In side navbar adjust spacing between the options fix(ui): sidebar review changes #955

• In select network

  • Change the bgcolor of selected network fix:networks popup ui changes  #954
  • Decrease the opacity of horizontail line fix:networks popup ui changes  #954
  • Change all networks icon as per figma file fix:networks popup ui changes  #954
  • Fix the width/characters of network name in the box fix:networks popup ui changes  #954
  • Update the design for displaying account address in top nav fix:networks popup ui changes  #954

• In Add new network popup

  • Update the image in pop up as per figma file fix:networks popup ui changes  #954
  • Adjust the spacing between all elements fix:networks popup ui changes  #954