[dataimport] remove _rql heresy
1) ObjectStore knows nothing about rql, it just drops it on the floor
2) RQLObjectStore has a session, it can run rql that way
3) setting an object's "_rql" attribute is not a reasonable user-facing
interface
Also drop _commit attribute from base ObjectStore, it doesn't use it.
.. role:: raw-html(raw)
:format: html
RSS driven
----------
RSS is a pretty useful technology that can be widely used on this
site. Any set of data can be presented as RSS. You can then plug in
an RSS reader into that and follow the site activity. For example :
:raw-html:`<p><a class="reference"
href="view?vid=rss&rql=Any+X%2CM+WHERE+X+modification_date+M+ORDERBY+M+DESC+LIMIT+30"><img
alt="rss" src="data/rss.png"> latest changes</a></p>`