Added Sliders for Creating Speech

[JasonLin43212]

• Added sliders for topics to adjust priority levels in speech
• Calculate how many citizens vote for you based on a difference score
• Added some real data from Afrobarometer

[ryaanahmed]

oh whoops -- looks like there's a conflict with whatever I just merged. @JasonLin43212 -- can you fix and lmk when ready to merge?