Direct check of entered values

Entered/Selected values checked directly if entered.
Fixed problems with file longer than config sections.

Performance improvements

Backed:
New data structure for values and errors.
Just validating on load and when entered.

Better matching for PIP8.

Added date-format

Added a date-formate option in the config.
Small performance optimization.
Fixed spelling mistakes.

combo box support toolTip

When hovering over a combo box the tool tip will now display.

Support combo box

If allowed values where defined, they now could be displayed as a combo box.
Not allowed values in a combo box have a red font.
Combo box with a not allowed value selected become red.
Bug Fixe: Hiding rows no longer causes crazy line numbers.

Second Release

Fixed crash opening a file without entries.
Implemented last file loading.
Added new file option.
Added an option to ignore errors on loading/saving.

First release

The first release of the project.