Issue #1214344 by wiifm, msonnabaum, oriol_e9g: Fixed 'misc/progress.js' is not being included when 'Aggregate JavaScript files' is used.

Issue #1336308 by kathyh, pjcdawkins, meshkinsoft: Fixed wrong usage of function t in system_menu().

Issue #1226796 by sun, catch, Damien Tournoud: Fixed Not equal operator '!=' is not supported by all databases, must be '<>'.

- Patch #1276746 by jessebeach: the title of the ui.mouse library in system.module is incorrectly set to 'jQuery UI: Droppable' instead of 'jQuery UI: Mouse'.

Issue #981524 by das-peter, Pisco, sun: Fixed system_date_format_save() doesn't save localized date formats.

Issue #936686 by David_Rothstein, Einewton: Fixed 'Installation failed' errors when installing modules from Update Manager w/ Overlay.

Issue #1167458 by yoroy, David_Rothstein, dcmistry: New users do not know to click on 'Modules' to extend their site.

Issue #879076 by alex_b, pillarsdotnet, ceardach: Fixed Do not set expired=0 where expired is already 0 (performance).

Issue #1016582 by mfb, sun: Fixed Help block empty on every page, or the same on every page, due to 'cache per role'.

- Patch #1014130 by catch, carlos8f, David_Rothstein: install_profile_info() does a file system scan on every request to admin/config (and etc.).

- Patch #854396 by tstoeckler, jhodgdon: improve documentation for date-related functions and hooks in system.module.

#609772 by dww, JacobSingh, ksenzee: Fixed Impossible to extend the FileTransfer class system in contrib

- Patch #669510 by quicksketch, David_Rothstein, Dave Reid, casey, Gábor Hojtsy, mrfelton, effulgentsia: merge administration theme with hook_admin_paths().

#952528 by jptavan: Add missing break; to system help to prevent actions help from showing up on maintenance page.

- Patch #794936 by c960657, amateescu: system_rebuild_module_data() called twice on admin/build/modules.

#151452 by David_Rothstein, Dave Reid, tstoeckler: Fixed uninstalling modules does not follow dependencies.

- Patch #944198 by sun: functions that call drupal_system_listing() act on potentially invalid system items.