Topcoder React Lib

Added getTcM2mToken() function to API service, to facilitate handling of TC M2M token;
Added getGroupTreeIds(..), getTokenV3(), and reduceGroupIds(..) functions to the Groups service, to facilitate deduction of all IDs in a group (sub-)tree, rooted at a specified group.

A few changes related to fetch of projests visitble to users, and creation of new challenges. Minor release to guard against any side-effects.

Updated to use latest topcoder-react-utils. A bunch of dependencies have been updated in result, something can be broken.

Adds functionality necessary for the new Profile Settings page.

Update of dependencies.

Pre-release drafts of the initial library version. A big journey starts here.

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