Merge branch 'master' into next
- master: WebSearch: fix Search Guide reformatting WebSearch: fix Search Guide mismatch tags WebSearch: Search Guide reformat and pretty-print I18N: updates to Catalan and Spanish translations OAIRepository: forcing clients to re-harvest
- Merge note: amended OaiREPOSITORY SQLAlchemy model according to invenio_2013_02_01_oaiREPOSITORY_last_updated.