standardize web path examples in api doc to url root of http://&lt;servername$gt;/ltfsarchiver/

this changes only the html documentation and not the corresponding doc
and pdf versions
change references of /opt/pprime to /opt/ltfsarchiver since /opt/pprime doesn't seem to exist anymore
ltfsarchiver.conf: clarify options for LTFSARCHIVER_MODE in comment
fix discrepancy between documentation and conf file on LTFSARCHIVER_MODE
welcome.html: update to 1.1
README: make the documentation easier to get to
README: fix line breaks
README type
LTFSArchiverInstallation.htm: add note to add www-data and root as users to the postgres database.

Helped me at least.
remove old version 1.0 ltfsarchiver directory that was nested into ltfsarchiver/ltfsarchiver
ltfsarchiver.conf: fix reference to non-existant pprimelto.conf file
prefer LTFSARCHIVER_LOGDIR over LTFSARCHIVER_HOME/logs
the same set of html documentation is repeated twice in the repository, making it consistent for now
menu.cgi welcome env variables only if they exist
ltfsarchiver.ubuntu: mention status option in usage
fix Density Code for LTO6 tapes
fix update_uuid_status call, substatus=10 requires 4 arguments
Merge pull request #1 from amiaopensource/master

updates to documentation, link to docs in README, fixes for typos and inconsistencies