Misc cleanup (#73)

* Stop previously running zeroconf instances

* Lots of formatting fixes

* Use f-strings for time delta

* More line fixes

* Update requirements.txt

* More misc cleanup

* Simplify README.md

src/ui/add_job.py

@@ -21,6 +21,12 @@ from src.utilities.zeroconf_server import ZeroconfServer
 class NewRenderJobForm(QWidget):
     def __init__(self, project_path=None):
         super().__init__()
+        self.notes_group = None
+        self.frame_rate_input = None
+        self.resolution_x_input = None
+        self.renderer_group = None
+        self.output_settings_group = None
+        self.resolution_y_input = None
         self.project_path = project_path
 
         # UI
@@ -358,7 +364,7 @@ class NewRenderJobForm(QWidget):
                     text_box = QLineEdit()
                     h_layout.addWidget(text_box)
                 self.renderer_options_layout.addLayout(h_layout)
-        except AttributeError as e:
+        except AttributeError:
             pass
 
     def toggle_renderer_enablement(self, enabled=False):