redirect 7.x-1.0-rc2

Changes since 7.x-1.0-rc1:

• #2308717 by Pere Orga, oadaeh, Kristen Pol: Add watchdog message when inactive redirect purging is enabled, but unable to do so.
• #2135575 by mfb, René-Marc Simard: Fixed Views handlers for source and redirect fields were broken.
• #1198028 by mxwright, gundarx, chellman: Redirects do not work if $_SERVER['SCRIPT_NAME'] does not follow base_path
• #1796596 by stefan.r, Eric_A, Steven Jones, Dave Reid, damien_vancouver, azinck, DamienMcKenna, SylvainM, nicholasruunu, GoZ, deviantintegral, mrmikedewolf, tannerjfco, Yorirou, attila.fekete, vadym.kononenko, heddn, hass, candelas, fenstrat, cmseasy, rooby, vinmassaro, Alan D., hanoii: Fix and prevent circular redirects
• #1444506 by helmo, clemens.tolboom, Dave Reid: Fixed users with the "access site in maintenance mode" permission should still be allowed to use redirects.
• #2296035 by Pere Orga: Fixed documentation, especially for redirect_load_by_source().
• #1872242 by TravisCarden: Fixed typo in redirect_purge_inactive admin form description.
• #1913924 by Simon Georges, Dave Reid: Removed useless files[] directive for files that do not contain classes.
• #2176175 by fearlsgroove, brad.bulger: Don't add URL redirects to extra fields for excluded entity types.
• #2048137 by mfb, Pere Orga, heddn: Disable canonical redirect code that calls drupal_get_path_alias() and breaks path cache (core bug https://www.drupal.org/node/2400539).
• #1263832 by hefox, Sneakyvv, scott.allison, Mark Theunissen | grendzy: Fixed Remove session-based flood / loop detection since it performs poorly and has unfix-able race conditions.
• #2051313 by mfb, Matt V.: Fixed redirect user ID not stored when redirects added via the user interface.
• #2049151 by mauritsl, justanothermark: Fixed vertical summary with number of redirects was incorrect.
• Skip infinite redirect loop handling when running in SimpleTests for now.
• Removed the crappy redirect loop message and replaced with proper trigger_error() warning.
• #1828696 by johannez, Dave Reid: Fixed compatibility with entities that return invalid values for entity_uri().
• Fixed redirects could not be created to existing files.
• #1244524: Fixed redirect vertical tab table is inconsistent with placement of actions.