Use new editor for valuesColor in Parameter dialog

Closes #193 (closed)

Closes #59 (closed)

Closes #239 (closed)

• Use ValueColorEdit for valuesColor in Parameter dialog

• Refactored creation of cell editors in database editor

• Fix regex used to validate valueColors

• Consolidate about plot types into one place

  This file contains the SQL statements needed to update the database

  update_value_colors.sql

sohstationviewer/view/db_config/value_color_helper/edit_value_color_dialog/__init__.py

+from .edit_value_color_dialog import *  # noqa: F403, F401
+from .line_dot_dialog import *  # noqa: F403, F401
+from .multi_color_dot_dialog import *  # noqa: F403, F401
+from .tri_color_lines_dialog import *  # noqa: F403, F401
+from .up_down_dialog import *  # noqa: F403, F401
+from .dot_for_time_dialog import *  # noqa: F403, F401