When restoring a backup containing tags, ratings and comments made in dolphin, only tags and ratings but not the comments are restored.
Steps to Reproduce:
1. Restore a backup using nepomuk backup utility
2. Look for comments and see that all entries are empty
Git commit 2427dc8bb2559d47ca8a9a8ba31f35c6c5e7bbda by Vishesh Handa.
Committed on 08/08/2013 at 17:39.
Pushed by vhanda into branch 'KDE/4.11'.
Backup Statement Generator: statements without a datatype can be valid
In Nepomuk the nao:description is stored as an rdfs literal, which means
it doesn't have a datatype, but is supposed to have a language tag.
Since we don't store the language tag, it is just stored as a string.
This used to be considered invalid by the statement generator and
therefore the nao:description (dolphin comments) was never backed up
even though it was requested.
Also added unit test
M +8 -0 autotests/test/backuptests.cpp
M +5 -1 services/storage/backup/statementgenerator.cpp