Fix javadocs

[thdaele]

• Properly render them
• Javadoc doesn't change function param name when the function param name gets changed. Workaround for this atm is: edit javadoc, save and it will update it.

[viktor40]

Render javadocs as tooltips.

[viktor40]

As of #26 javadoc rendering is implemented

[viktor40]

Can you elaborate on the second part of this issue? I don't quite understand what you mean.

[viktor40]

The second part of this pr will not be fixed yet and will be implemented as a seperate feature. I will close this issue when merging #26 and create seperate issues for future features for the javadocs.