added related project to the idea detail page
correctly load comments to an idea, add messages and delete messages
small fixes to project (mostly translations in JS files)
fixed file upload in comments
identify who posted the idea among the commenters.
changed color to links in the header of the project
new FOOTER
reordered companies
updated NL
fixed "thank you for submitting a link" message in other type of new items
added buttons translated to NL
translation improvements to Join page
skip phone number in Join form
prepared email templates for localisation and added .html template files
extracted translation strings from email
reformatted file. Added html version of email messages
implemented dealing with localisation in email templates
new footer for Gemeente Amsterdam
email subjects translations
prepared email subjects in .html file and extracted them with xgettext