Short-term fix to make comment block 80% & left 20px

[huwmorris]

#272

[emanueldima]

@huwmorris Huw, please add here a diff between the original invenio file and the file you have added, so we can make a proper review. In general, as Mikael suggested some time ago, it's better to first commit the original file and then add the changes that are needed in another commit. But for this request, let's just have the diff in comments.

[emanueldima]

Ok, ok, I'll do it:

$ diff ../invenio/modules/webcomment/lib/webcomment_templates.py invenio/lib/webcomment_templates.py 
1249c1249
<                                       width='100%',
---
>                                       width='80%',
1261c1261
<         form = """<div id="comment-write"><h2>%(add_comment)s</h2>
---
>         form = """<div id="comment-write" style="margin-left:20px"><h2>%(add_comment)s</h2>