Bump jquery-rails from 3.1.0 to 3.1.3 in /web_app

[dependabot[bot]]

Bumps jquery-rails from 3.1.0 to 3.1.3.

Changelog

Sourced from jquery-rails's changelog.

3.1.3 (16 June 2015)

• Fix CSP bypass vulnerability. CVE-2015-1840

3.1.2 (1 September 2014)

• Updated to jquery-ujs 1.0.1

3.1.1 (23 June 2014)

• Updated to jQuery 1.11.1
• Updated to jquery-ujs 1.0.0

Commits

• ee1ed3c Release 3.1.3
• 92f2a9d Upgrade jquery-ujs to do proper checks for cross domain requests
• 135ba0f Release 3.1.2
• 1eabddd Update to latest jquery-ujs.
• d3bc214 Merge branch 'master' into 3-1-stable
• 4bc300a Merge pull request #164 from mattmenefee/patch-1
• 0374462 Update Changelog.md to correct release year
• a3e9a29 Merge pull request #163 from dy-dx/update-readme
• 614d06a updated readme with jQuery version 1.11.1
• 7d0cf26 Release 3.1.1
• Additional commits viewable in compare view

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