Modify the function convertLaTeX in the following ways:

[aisejohan]

• Do not remove line breaks as much as possible. This is not necessary but helps looking at the html produced by the function.
• \begin{proof} replacement can be done in 2 steps instead of 3
• Change adding of <p> tags: we should only add a <p> tag after the last list environment has closed. With the code as is you get an ugly new paragraph (see section on attribution in introduction). If we don't add a <p> tag at all then tag 0032 and 03GW look bad. Of course, if that problem can be solved by a change in css, then we can use remove the addition of the <p> tags at closing of lists...

[pbelmans]

I don't see a difference in the output for tags 0032 and 03GW (unless this pull request is already in use on the main server). But things seem to be okay.