clean up some signal-slot combinations in the editor * file-editor-tab.cc (contructor): remove connections of signals for command execution and for creating the context menu; (execute_command_in_terminal, create_context_menu): related slots removed * file-editor-tab.h: removed slots and signals that were emitted therein * file-editor.cc (add_file_editor_tab): connect edit area signals directly to the related slots without involving the editor tab

% Increase save size to run @seealso macro for Octave documentation
save_size = 10000