Pmb 4

Ryan, please review my changes carefully. I made some refinements on the main pages to start helping to shape it more to your vision. However, I may have missed the mark. So please verify if it fits your vision. I know it will take some further work. 

Also, included in the branch is the Inventory model. I have not completed routes nesting necessary for the linking of the employees to the inventory entries. 

Again, please let me know if any of this changes do not fit. I can redo them. I do not want to hinder your refinements.

Also, I removed the sqlite3 gem from the gemfile in order to minimize any potential conflicts.