Introduce /redraw command

`/redraw` command allows resolve problem for usual users,
as well as developers.

Incredibly useful when debugging with something that
can trash out the output, like GDB.

Not to mention many asynchronous commands that can break the UI
at any point.

src/command/cmd_defs.c

@@ -2729,6 +2729,18 @@ static const struct cmd_t command_defs[] = {
               "/privacy logging off",
               "/privacy os off")
     },
+
+    { CMD_PREAMBLE("/redraw",
+                   parse_args, 0, 0, NULL)
+      CMD_MAINFUNC(cmd_redraw)
+      CMD_TAGS(
+              CMD_TAG_UI)
+      CMD_SYN(
+              "/redraw")
+      CMD_DESC(
+              "Redraw user interface. Can be used when some other program interrupted profanity or wrote to the same terminal and the interface looks \"broken\"." )
+    },
+
     // NEXT-COMMAND (search helper)
 };
 

src/command/cmd_funcs.c

@@ -9727,6 +9727,14 @@ cmd_correct_editor(ProfWin* window, const char* const command, gchar** args)
     return TRUE;
 }
 
+gboolean
+cmd_redraw(ProfWin* window, const char* const command, gchar** args)
+{
+    ui_resize();
+
+    return TRUE;
+}
+
 gboolean
 cmd_silence(ProfWin* window, const char* const command, gchar** args)
 {

src/command/cmd_funcs.h

@@ -255,6 +255,7 @@ gboolean cmd_executable_vcard_photo(ProfWin* window, const char* const command,
 gboolean cmd_mam(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_editor(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_correct_editor(ProfWin* window, const char* const command, gchar** args);
+gboolean cmd_redraw(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_silence(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_register(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_mood(ProfWin* window, const char* const command, gchar** args);