Start acknowledging people in security.txt
Bump version to 7.2.13
Bump version to 7.2.13-dev
Add initial end-to-end tests.

- Created new test runner that starts up an instance of Aspen, runs the e2e tests in the configured browsers, and tears it down.
- Created a test for the main title and strap line copy.
- Added e2e tests to the jstest make task.
Add node_modules folder to gitignore.
Add change that is required by JS unit tests.

- This change should have been included in 3e900baeaec1fc52b66551332c4e1ba4c2370080.
Merge pull request #766 from berryp/master

Add node_modules folder to gitignore.
Merge pull request #764 from berryp/first-e2e-test

Add initial end-to-end tests.
Merge pull request #767 from berryp/bugfix

Add change that is required by JS unit tests.
Merge pull request #763 from chrisdev/master

Addressed issues #685 and #57
A fix for issue #769