Settings revision, 2nd iteration

[tyuldashev]

Based on result of testing #753 issue:

UTBot settings page:

• Rename Test with exceptions to Tests with exceptions, make test plural, otherwise it's not aligned with 'Fail/Pass'
• Please edit the setting label and the tooltip as follows:
  Label:
  Hanging test timeout (milliseconds) -> Hanging test timeout (milliseconds per method)
  Tooltip:
  OLD: Test generation may hang due to infinite loops or other code conditions. Set timeout to stop waiting for hanging process.
  ->
  NEW: Set this timeout to define which test is "hanging". Increase it to test the time-consuming method or decrease if the execution speed is critical for you.

UTBot generation dialog:

• Please add the tooltip for the 'Test generation timeout (seconds per class)' setting:
  Tooltip:
  Set the timeout for all test generation processes per class to complete.
• Apply alphabetical case insensitive sorting to list of methods
• Test generation timeout input field should accept only numbers and save its value between invocations
• Rename values in Testing framework: JUnit5 -> JUnit 5, JUnit4 -> JUnit 4
• List of values for Testing framework field should persists its width. Currently it's sometimes changes depending on value of Parametrized tests. See screen recoding below.

Screen recording

• Please make sure that 'Mock strategy" setting with options/tooltip are renamed as follows:
  Label:
  Mock strategy: -> Mocking strategy:
  Options:
  Do not mock
  Mock package environment -> Mock everything outside the package
  Mock class environment -> Mock everything outside the class
  Tooltip:
  OLD: Mock everything around the target class or the whole package except the system classes. Otherwise mock nothing.
  ->
  NEW: Mock everything around the target class or the whole package except the system classes. Otherwise mock nothing. Mockito will be installed, if you don't have one.
• Please rename 'Parametrized tests' to 'Parameterized tests' for consistency with the JUnit terminology.
• Please rename 'Test source root:' to 'Test sources root:' for consistency with IntelliJ IDEA interface terminology.