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

Refs #7634. Session Timeout zu kurz. Add logout of FE user. Logout happens not directly on the first call, but on the second or third page access.

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'.

Fixes #6914. Final implemention of customized typeMessageViolation. Incl. unit tests. New escape mode 'C' - escapes ':' by '\'.' - useful for variables in variable definition.

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.

Refactor: Manual.rst update config variables (reorder), add 'qfqLog'. Support.php: formSubmitLog hardcoded to fileadmin/protected/log. DOCUMENTATION_QFQ > SYSTEM_DOCUMENTATION_QFQ. Remove config var 'logDir'.

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.

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.

Bug #5924: change include_once() against include() - second call to include_once just returned 'true'.

Bug #5890 config.qfq.ini is public readable. Renamed file to config.qfq.php. Implement a basic migration assistant to copy DB credentials to new config.qfq.php. All other values have to be copied to extmanager/qfq-configuration manually.

B5077 Dynamic Update & FE.type=required: Server fixed - a) dynamic calculated modeSql respected, b) formModeGlobal=requiredOff respected, c) dynamic FE with mode='hidden' are not saved anymore.

HelperFormElement.php, SessionCookie.php, Html2Pdf.php, Store.php, Constants.php: migrate to camel case on configuration variables.
Config.php: readConfig() reads now config.qfq.ini and T3 LocalConfiguration.php.

Bug #5557 / Form load: STORE_RECORD filled, but should be empty - clear STORE_RECORD in case it's instantiated via QFQ controller.

Link.php: SIP Links get automatically parameter '__dbIndexData'
Report.php: can select DB via 'dbIndex' directive (global)
AbstractBuildForm.php: dbIndexData now based on setting in Form (before on config.qfq.ini)
formEditor.sql: FormEditor update on Form 'form' and 'formElements'