Notify user when config directory can't be created because there is already a file with the same name (#1134)

* Moving configuration values and methods from install.py to config.py -- everything is broken right now
* Using context to store config path - still lots broken
* Use mocks and context.config_path to store test configs - many tests still broken though
* Update changelog [ci skip]
* Fix jrnl --ls crash
* Fix crash when no editor configured
* Attempt to patch config path with test data - doesn't appear to be working
* Properly use patched config path and add config given to scenario that wasn't using it
* Fix copypasta
* Fix editor test that needed patched config and trapping for system exit
* Add exception and handling for when configuration directory is actually a file
* Remove extraneous comment
* Use more generic JrnlError with messaging switchboard
* Format code a bit nicer
* Remove unnecessary given in diagnostic test
* Ensure full error message is output
* Remove unnecessary whitespace characters

jrnl/jrnl.py

@@ -11,6 +11,7 @@ from .color import ERROR_COLOR
 from .color import RESET_COLOR
 from .config import get_journal_name
 from .config import scope_config
+from .config import get_config_path
 from .editor import get_text_from_editor
 from .editor import get_text_from_stdin
 from .exception import UserAbort
@@ -228,7 +229,7 @@ def _edit_search_results(config, journal, old_entries, **kwargs):
             f"""
             [{ERROR_COLOR}ERROR{RESET_COLOR}: There is no editor configured.]
 
-            Please specify an editor in config file ({install.CONFIG_FILE_PATH})
+            Please specify an editor in config file ({get_config_path()})
             to use the --edit option.
             """,
             file=sys.stderr,