Updated to compile with QT5.2:
-updated singleton;
-updated required header files;
-updated few functions.
Added "drag" functions as they were not present in code - hope they are correct.
Fixed bug, when directory is not set, after dialog selection "Notes" addition was ignored and notes where written to selected directory after first start to directory with "Notes"
setting "Notes" directory should be only after succesful tests
for Unix "/Notes" for Other OSs "\\Notes"
Forgot one header to add corrected