Factiva: Remove line breaks inside text

Spotted on the Assange agencies corpus. Line breaks are present
in the source, but only paragraphs should be taken into account.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r-temis@529 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Finish editing before saving stemming dictionary

Without this, the currently edited cell is not saved,
which could be misleading for users, leading them
to losing their last modification.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r-temis@530 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Mark some dictionary columns as not editable

Since we do not take them into account, better make it clear.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r-temis@531 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Stop processing corpus when dtm does not exist

This can happen e.g. when passing the wrong encoding to
import Alceste files. Waiting for a better solution, it's
always good to stop early after errors happened.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r-temis@532 edb9625f-4e0d-4859-8d74-9fd3b1da38cb