Window focus functionality & more formatting updates

More updates:
1) Main window now hides upon button click and returns once accept detected
2) Logo now split across logo and tab frames - contact me if you want the logo I'm using
3) There's some other stuff in there but I forgot... check the code changes =)

Major missing components:
1) Working tree for project tasks
2) Tkinter-based timer (our python-based timer works already....)
Merge pull request #13 from hyperstrike/patch-8

Window focus functionality & more formatting updates