Change helptip style
Change helptip style

Helptip style changed from a question mark to underlined text to match with rest of helptip styles
Existing 'ht' class used for styles

Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode