[POOTLE]Problems with repeated "filters tags"

[RGB ES <rg...@gmail.com>]

When reviewing a project on pootle, you have the option to filter the
text chains according to what the server understand as "wrong". For
example, if you go here

https://translate.apache.org/es/OOo_34/starmath/review.html

and click on "unchanged" you'll end on this page

https://translate.apache.org/es/OOo_34/starmath/translate.html?matchnames=unchanged

There you'll see the first problem: the "unchanged" tag is repeated
for the "nospace {...}" entry. For the second problem, just click on
"next" below the translation: instead of going to the next repeated
entry you'll remain there, on the 12th entry.

There are several places where pootle shows duplicated tags. Sometimes
a click on the "next" or "send" works but pootle returns several times
to the same entry before going on. On other situations, like the one
commented above, it goes nowhere.

Also, even if the UI offers a red X to clear the tag it do not work.
Maybe this last problem is related with the impossibility to accept
suggestions.

Regards
Ricardo