code: def import_all_modules():
    
    for module_folder in get_installed_modules(): 
      try:
        if module_folder in module_data:
          raise seash_exceptions.ModuleImportError("Module already imported")
        module_data[module_folder] = import_module(module_folder)
      except seash_exceptions.ModuleImportError, e:
        print str(e)
docs: <Purpose>
      Imports all modules within the modules folder.  This should only be called once 
      throughout the entire execution of seash.
        
    <Side Effects>
      Modules that don't have collisions will have their commanddicts and 
      helptexts loaded and returned.
      
    <Exceptions>
      ImportError: There is an existing module with the same name already imported.
        
    <Return>
      The seashcommanddict that contains the imported commands on top of the 
      passed in commanddict.