fixing snapshots

Merge pull request topcoder-platform#69 from topcoder-platform/develop

Develop

Merge pull request topcoder-platform#67 from topcoder-platform/develop

Develop

Merge pull request topcoder-platform#64 from topcoder-platform/develop

Develop

Merge pull request topcoder-platform#62 from topcoder-platform/develop

Fix Server-side filtering on challenge listings

Merge pull request topcoder-platform#60 from topcoder-platform/develop

Develop

Merge pull request topcoder-platform#60 from topcoder-platform/develop

Develop

Merge pull request topcoder-platform#57 from topcoder-platform/develop

Fix tests

Merge pull request topcoder-platform#52 from topcoder-platform/develop

Fix tests

Merge pull request topcoder-platform#51 from topcoder-platform/develop

Develop