UI updates for the main screen

[tarashagarwal]

Please change the color of alternate tab from blue to "#f0f8ff". This will make it consistent with the theme.
Increase the size of the font for all the text and make the header font even greater and bold.
Reduce the width of the table accordingly so that the UI appears clean.

For a reference: this is what we have developed of Linkry UI Screen
So adding margins to the right will make the UI look clean

[tarashagarwal]

Let me know if any challenges

[eeen17]

completed, pushed to siglead-management branch