Category (Hashtags) Implemented

I was able to implement the categories by hashtags in the subject area of the sent e-mail. In addition, I also organized each bookmark by the category and displayed them in order of most recent to oldest. I had to create different methods in the user model to get the associated topics and bookmarks for the current user. I was also able to configure each category to display the associated bookmarks. I haven't touched the visual part of the project yet (html/css) because I was working on making sure the functionality worked.

One thing that I couldn't figure out was to get the mailman_server to use the rails environment variables when i installed the figaro gem. I found out that the mailman_server is ran outside of rails, so that's why. I wasn't entirely sure how to set the mailman_server to run within rails.