F10782: Implemented pictureUpload.php functionality in Class File. Upload is now handled by API file.php. Added feature for function updateT3QfqConfig, possible to give config array or key. updateT3QfqConfig is handled over bool variable. Function getUniqueFileName is now in HelperFile Class. Optimized set of baseUrl.

F12630: Added code commentary. Reformatted code. getUniqueFileName function changed. New logFileMessages implemented. Awaiting feedback.

F10782: Changed documentation for TinyMce und httpOrigin. Set httpOrigin dynamically via baseUrl. Added implementation for the functionality of drag and drop from images. Refs #14463 Allow statusbar (resize button included) to show as default. Refs #14455 Drag and drop triggers record lock now.

F10782: Corrected Unit test. Added Documentation for tinyMce. Changed some functions (mkdir, paths). Implemented new baseUrl feature Refs #12452

F10782 Upload TinyMCE: Changed some strings with constants. Implemented function to use seperate for getting uniqueFilenames. Get default folder path from system store. Check file for image type and allow all extensions. Compare origin from server with qfq/user given origin from system store.

F10782 TinyMCE: Feature for own base path is implemented. Over forms parameter user can give with 'fileUploadPath=fileadmin/...' own path upload. Documentation for base path file is added.

WIP: F10782 TinyMCE Set unique name for every picture upload is implemented. Feature for own base path is left.

Refs #11035 use Path:: for paths that are defined in config. Except for Log & absolute paths... they need more work.

WIP refs #10782 - remove 'extension/Classes/Api/pictureUpload.php' only a prove of concept. This commit saves images under /crose/qfq/fileadmin.