CKAN 1.7.1

Minor: * Documentation enhancements regarding install and extensions (#2505) * Home page and search results speed improvements (#2402,#2403) * I18n: Added Greek translation and updated other ones (#2506)

Bug fixes: * UI fixes (#2507) * Fixes for i18n login and logout issues (#2497) * Date on add/edit resource breaks if offset is specified (#2383) * Fix in organizations read page (#2509) * Add synchronous_search plugin to deployment.ini template (#2521) * Inconsistent language on license dropdown (#2575) * Fix bug in translating lists in multilingual plugin * Group autocomplete doesn’t work with multiple words (#2373) * Other minor fixes