[BUGFIX] Tx_Extbase_Object_ObjectManagerInterface::create() is deprecated

Fixed by calling Tx_Extbase_Object_ObjectManagerInterface::get() instead.
[BUGFIX] No positions in new content element wizard

Issue: Click inside the WEB module on List -> "Create new record" -> "Click here for wizard!". At "2: Select position:" there will be no positions to select from.

This issue is caused by an incompatible TS array. In sysext/backend/Classes/Tree/View/PagePositionMap.php colCount and rowCount are expected inside config__.backend_layout but are direclty under config__.

This issue is fixed by moving colCount and rowCount inside config__.backend_layout.
Merge pull request #68 from amkoroew/fixDeprecation

[BUGFIX] Tx_Extbase_Object_ObjectManagerInterface::create() is deprecated
Merge pull request #72 from amkoroew/backend_layout

[BUGFIX] No positions in new content element wizard
[TASK] Early return and NOTICE in ConfigurationService on bad usage

This change sends a debug message and returns and empty array early if the ConfigurationService->getPageConfiguration method is called with an invalid (empty but not NULL) value as $extensionName argument.

Fixes: #71
Merge pull request #74 from NamelessCoder/emptyextension

[TASK] Early return and NOTICE in ConfigurationService on bad usage