Ks commit 9

Was made:
Com-9
-made multiline input
-now to execute the command, you need to put at the end /
-If we leave it I will change the descriptions of the commands, but I
-like the idea of a separate import
Com_10
-log into file;
-merging files with equals genres;
-writing unsave changes on exit with removing duplicate files;
-generalized input;
-some small corrections.
Com_11
-initialization moved to a separate class
-set CommandProcessor (hereinafter CP) singlton
-provide try/catch for CP.execute()
-in CP performed initialization of Scanner in constuctor, but no
CommandParser
-fixed MS Singlton
-check another exceptions in MS.SetTrack()