Project-Id-Version is fixed after tx pull
i18n - extracting new, pulling from tx
i18n - add mark_translated to highlight extracted strings
Merge pull request #128 from mbacovsky/tx_project_version

Project-Id-Version is fixed after tx pull
Merge pull request #131 from domcleal/mark_translated

i18n - add mark_translated to highlight extracted strings
i18n - fix apipie warning string to be properly extracted
i18n - fixed error message + docs