Fixed squished text on Topics page

Just some small fixes for readability.

-Made the topics title text non-squished. Fixed the font weight because 110% was not a valid property value.
-Also made the topics summary non-squished.
-Made the subtopic text just a tiny bit bigger.
-Made the 'Create Topic' button a tiny bit bigger so you could see the text in it easier.
-Made the panel text non-squished.