Import with option

[vcaldas]

The user should be able to specify the files to be imported by a String or part of a String.
Custom values are tuned for our lab, like 514.TIF is "Green"

But a panel should offer the following options:
1 - A text field to specify the substring or regex pattern (the text field displays the default value).
2 - If no value - i.e. textfield left blanc - the code assumes the default.
3 - A "test" button in front of EVERY channel. So the user can directly check if the files of that channel will be properly assigned.

[vcaldas]

Add a checkbox. In that case, the user can load just the selected channels.
Even if, lets say, red channel images are present, if the checkbox is not selected, that data will not be loaded.

[vcaldas]

Functionality available via the "Import" button.