Update header and footer for Comcast

[kkartunov]

Footer as per design.
Header to be as close as possible per design.

[SathyaJayabal]

Header and footer updated.

Header has minor style issues

1. Community dropdown must more to. the left
2. Community dropdown must be in lower case
3. Topcoder logo must be smaller

Marking as pass as these are minor issues

[lakshmiathreya]

@SathyaJayabal - pls add Env label too ...

[lakshmiathreya]

and milestone ...

[SathyaJayabal]

Verified on prod