HW1-1B Scenario 2: When articles are merged, the merged article should contain the text of both previous articles.
        PT: 65948196
* Added scenarios for logging in, going to the edit page, merging, and checking for body content of both articles.
* Note: did not implement any additional required step definitions yet.
*   I decided the step definitions should wait until the TDD phase.
HW1-1B Scenarios 3 throguh 5
PT: 65948206, 65948210, 65948212

* Added cucumber scenarios for merging 2 articles, and checking for:
  * the author of the merged article is the same as one of the originals
  * the comments on the merged contains all comments from both originals
  * the author of the merged is the same as on one of the originals