Trilium-py

* upgrade to ckeditor 19.1.0
* Ampersand in code blocks is recursively changed to \`&\` each save 917 
*  fix long filename overflowing, closes 1052 
*  fix hiding autocompletes after closing tab, closes 1034 
* safer backup to file using VACUUM INTO + possibility to explicitly backup now
*  return 401 when auth request is out of sync, closes 1056 
*  fix extra refresh because of duplicated sync event, closes 1063 
* improvements to drag & drop

bug fixes:

* fix deadlock after "cut to note", closes 1030
* fix exporting root note, closes 1024
* fix incorrect processing of sync rows, closes 1019

Various bug fixes.

* support for opening notes in a new window
* tree widget has now an option to hide images if they are included in the parent note (turned on by default) which makes the tree less cluttered
* tabs are now loaded lazily which speeds up initial load of the application
* linux and windows builds are now shipped with `portable-trilium` script which will set up the trilium-data directory in place
* upgrade CKEditor to version 19 which brings improvements in tables
* protected note switch is now moved to "note action" to declutter the view
* when recording timestamps, trilium uses client timezone instead of server timezone (relevant for server deployments only)
* long code notes are now previewed in read only mode to improve performance
* added "expand subtree" action to the note tree context menu

* support for opening notes in a new window
* tree widget has now an option to hide images if they are included in the parent note (turned on by default) which makes the tree less cluttered
* tabs are now loaded lazily which speeds up initial load of the application
* linux and windows builds are now shipped with `portable-trilium` script which will set up the trilium-data directory in place
* upgrade CKEditor to version 19 which brings improvements in tables
* protected note switch is now moved to "note action" to declutter the view
* when recording timestamps, trilium uses client timezone instead of server timezone (relevant for server deployments only)
* long code notes are now previewed in read only mode to improve performance
* added "expand subtree" action to the note tree context menu

bugfixes