Fix for I-127741 (https://appirio.my.salesforce.com/a3v50000000CojA)
Topcoder NodeJS User Activation Email API
Topcoder NodeJS Get User Identity API
Update get submissions api

1. Add submissionId in the api response.
Merge pull request #359 from Ghost141/submission_api_update

Update get submissions api
timeout: 10m -> 4m
Merge pull request #354 from cloudspokes/kohata-i-127741-api-timeout

Fix for I-127741 (Challenge API timing out for SFDC integration)
Merge pull request #360 from Ghost141/dev

Update search srm challenges api and search marathon challenges api.
TC API - SRM Practice Problems API
S-262899 added validator.
I-131385 challenge_duration check
Merge remote-tracking branch 'upstream/dev' into practice_problems_api

Conflicts:
	actions/srmChallenges.js
	initializers/helper.js
	routes.js
Merge pull request #362 from Ghost141/practice_problems_api

TC API - SRM Practice Problems API
Submitter -> submitter
Merge pull request #363 from cloudspokes/tom-Submitter-wording

Submitter -> submitter
Merge pull request #361 from thabofletcher/dev

I-131385 challenge_duration check
I-129863 new registration emails
I-132651 500 error on challenges rss
Did not intend to commit to dev branch directly

Revert "I-132651 500 error on challenges rss"

This reverts commit fca9ab957fb2d7ce44bf7eaed2978d26dba1ca39.
I-132651 500 error on challenges rss