[devtools] vreg becomes a class ppty
After multiple devtools refactoring, the vreg used for test is now *always* got
from the repository. Making this explicit is a step toward simplification of the
vreg handling during various initialisation phases.
Related to #2944813
.. winclude:: search_sample_queries
You can as well type complex queries using the RQL_ query language,
used every where to build dynamic pages of this site.
You can use one of the following prefixes to specify which kind of search you
want:
* `rql` : RQL query
* `text` : full text search
.. _RQL: doc/tut_rql