Implement user input checks

[ppicha]

Validate that the proper values have been set as AP parameters. If not, display a prompt and highlight the incorrectly set value. Both in individual AP detail and overall configuration page.

Checks need to consider:

• regular expressions for String values (decide on the separator first)
• integer vs. real numerical value
• can the value of a numerical field be zero? can it be negative? (for both integer and real values)
• percentage (0 - 100 real value)

[OndrejVane]

Time estimate: 6h

[OndrejVane]

[OndrejVane]

• created new data types for validations
• • Percentage (0-100)
• • Positive Integer (0 - infinity)
• • Positive Float (0.0 - infinity)
• all configuration values ​​are checked, if they are not entered correctly, the user is notified by an error message
• String substring inputs are also check
• • maximum substring is ten
• • substrings can not start a and end with delimiter