mollom 6.x-2.3

Changes since 6.x-2.2:

• #1938768 by sun: Limited mollom_build_id usage to CAPTCHA-only protected forms.
• #1938768 by sun: Hardened test coverage for CAPTCHA-only protected forms.
• #1938768 by sun: Mimic D7's $form_state['complete form'] to allow validation handlers to alter the form structure.
• #1938768 by sun: Fixed text analysis validation does not always (re-)trigger CAPTCHA when required.
• #1938768 by sun: Fixed CAPTCHA form element is not always hidden when it ought to be not visible.
• #869782 by sun: Added link to Mollom false-positive report form to blocking spam validation error messages.
• #1801220 by sun, Cottser, TravisCarden: Clarified text analysis strictness configuration option.
• #1957516 by sun: Updated administrative user interface strings.
• #1906978 by sun: Fixed text analysis does not always allow for binary mode.
• Fixed {cache_mollom} records are only expired on cron runs.
• Fixed audio CAPTCHAs cannot always be solved.
• #1938768 by sun: Fixed text analysis is incompatible with enabled page cache/reverse proxy.
• #1956406 by sun: Fixed Bogus server response test expectations.
• #1147160 by sun: Fixed 'title' attribute of honeypot field is injected as form input 'value' by bogus JavaScript placeholder implementations.