Link the text "Topcoder Referral Program"

[kkartunov]

Link it to info page.
Appears when user is logged in on /gigs page in the referr banner.

2. Update the page title for /gigs to: "Find Freelance Work | Gigs | Topcoder"

[SathyaJayabal]

verified on dev


@kkartunov , should we also add the link in the not logged in case?

[kkartunov]

@SathyaJayabal not needed in not logged in case as there is link to info page when they click the Reffer a friend button.

[SathyaJayabal]

verified on staging (develop branch)

[SathyaJayabal]

verified on prod