Improve installation: All items are disabled in default.param and path is wrong

[han-k59]

Two problem occur during installation in Debian.

1. Paths are not correct
   WARNING: configuration_file.txt not found, using internal defaults ----- SExtractor 2.19.5
   It would help if the message is clearer. E.g. modify path in default.sex

2. All key are disabled with a # in default.param leading to an other error. Suggest to enable some keys default. Would suggest to remove the # from the following keys (or more):

NUMBER Running object number
X_IMAGE_DBL Object position along x (double precision) [pixel]
Y_IMAGE_DBL Object position along y (double precision) [pixel]

See discussion here:
https://stackoverflow.com/questions/60153093/how-do-i-get-source-extractor-to-analyze-an-image

[ebertin]

Hi @han-k59
Not sure about the first proposition; however I fully agree with your 2nd point! This is clearly an oversight on my part. I have now uncommented NUMBER, X_IMAGE, Y_IMAGE, and FLAGS in config/default.param in the develop branch, which will find its way to main and to a release soon. Thanks!