#16 Enhance interaction with voting and translation variants

[tm_lv]

Looking on some hot topics with long discussion
(http://termini.laka.lv/terms/download/) i figured out
that it would be great, if right after translation, the
most popular variant from discussions could be found.
Like this (asciiiaaaaarrrrttt):

============================================
Name: download

Description: .....
.......................

Translations: ...
.......................

Most popular submitted translations:
ielaadeet

Comments
......
.....
============================================

(still - have to think about right naming of section)

In order to do that, i suggest following:

1. Add new field to comment input form, where you could
write your offered translation (maybe just change the
name for "title" field?)
2. Add simple comment voting (yeah i know, there is
nothing simple about it)