Filter code - fix

When filter includes Data Science track, still should be included into data science track included DEVELOP_MARATHON_MATCH sub track.

Update - Fix Server-side filtering on challenge listings - on master -

Update - Fix Server-side filtering on challenge listings - on the master

Re-tagging as earlier prod release dint start it is same as v0.7.12

Challenge # 30088678

Fix Server-side filtering on challenge listings - on master

Fix Server-side filtering on challenge listings

challenge # 30088678

hot fixes

• Replace calls to the V2 from dashboard and profile page with v3
• Add support for 2-step-email verification

Part of challenge # 30088679

Part of challenge # 30088679

Hot fixes with test fixed

Merge pull request #52 from topcoder-platform/develop

Fix tests

Hot fixes

Merge pull request #51 from topcoder-platform/develop

Develop

v0.7.8_deleted: Merge pull request #43 from topcoder-platform/develop

upgrading version

Code cleanup generic

Merge pull request #43 from topcoder-platform/develop

upgrading version

Code cleanup

Merge pull request #43 from topcoder-platform/develop

upgrading version