B8571 Primary Key: report error if lower/uppercase don't match - in general if given primary key is not found in table definition.

Fixes #8067. Feature: url-sip / url-sip-skip-history - Form forwarding can now be used with SIP encoded parameter.

Refactor to use form.restMethod instead of form.permNew|edit=rest. Next step will be to eliminate formMode=FORM_REST

Refs #7634. Refactor. REST form/id's are now in STORE_CLIENT. Unit Tests will fail - not updated to new function.

B7634. Fixes #7634. Session Timeout zu kurz. The bug was probably not a bug, but a too short timeout together with an misleading exception (logout and in - but reload the page also leads to valid page). The fix is 'take the system default (php.ini) and set that one'.

Refs #7743. Detection of 'pattern error' on per QFQ default, custom instance wide, per form or per FormElement - per FormElement overwrites other. System specific generated overwrites QFQ static default, instance wide default. Move default pattern to constants.

Fixes #7620. Label align left/center/right. Defined by config/form/formelement. FormEditor slightly redesigned.

Fixes #3992 (Feature): dbNameQfq & dbNameData already implemented. dbNameT3 renamed from T3_DB_NAME. No more configuration in config.qfq.php necessary. Manual updated.
AbstractException.php: fixes access to uninitialized array elements.
Download.php: get dbT3 now from STORE_SYSTEM
Config.php: read 'dbNameT3' from TYPO3_CONF_VARS or from T3 config file.
QuickFormQuery.php: refactor gathering 'dbNames' - now from config.qfq.php. Fixes bug in getForwardMode() for QFQ inline editing.

FormAction.php, QuickFormQuery.php: fixed new implemented error - calling 'Evaluate->parse()' with ROW_EXPECT_0_1 returns only an array, not an array of arrays.

stat(): throws an exception, if file does not exsist - implement file_exist() before doing a stat().

Evaluate.php, QuickFormQuery.php: 1) split exception in user/support, 2) start to implement that '!' in '{{!...' is not necessary anymore. Implemented for 'fillStoreVar' in FE Action elements.

Fixes #6866: On logout destroy STORE_USER. Session.php: check if _COOKIE['fe_typo_user'] has changed - yes: clear STORE_USER. Store.php: Rearrange functions.

F4906 Php Session Timeout: can be specified globally in configuration and per form. Affects only logged in FE User.

F4901: implement split with 'convert' (jpeg). Refactor chmod(), unlink(), rename(), rmdir(), copy() to use by QFQ version which throws an exception.