pagination limits lists of different things in the API to 20 items, causing very…

pagination limits lists of different things in the API to 20 items, sometimes causing very wrong tag selections. I would consider this critical: anything done previously with makeIntegralTarBall may be wrong. It seems, however, that it only happens sometimes, since it depends on the number of items.

This also applies to other cases of list in the gitlab API, there are few cases that I noticed, possibly with limited impact.

this should be used instead:

XXX.list(all=True)

as mentioned here:

http://python-gitlab.readthedocs.io/en/stable/api-usage.html#pagination