Fix for I-127741 (https://appirio.my.salesforce.com/a3v50000000CojA)
Add technologies and platforms filter in get challenge rss api.
Merge pull request #356 from Ghost141/rss_fix

Add technologies and platforms filter in get challenge rss api.
S-262899 added validator.
Merge branch 'dev' of https://github.com/cloudspokes/tc-api into dev
Update search srm challenges api

1. Switch database from topcoder_dw to informixoltp.

2. Update api doc.
Merge pull request #357 from Ghost141/srm_api_update

Update search srm challenges api
Topcoder NodeJS Active and Upcoming Data Science Challenge API
Merge pull request #358 from flytoj2ee/dev

Topcoder NodeJS Active and Upcoming Data Science Challenge 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
Update search srm challenges api and search marathon challenges api.

1. Add challengeName filter in these two 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.
S-262899 added validator.
Merge remote-tracking branch 'upstream/dev' into practice_problems_api

Conflicts:
	actions/srmChallenges.js
	initializers/helper.js
	routes.js