Several minor fix

• use fnmatch for camera name (/closes #29 (closed))
• look at more location when try to get a dataset. At the current one and the 'root entry'. This way users can give path relative to scan entry.
• create the file anyway. this way the user can change it manually (/closes #27 (closed)) instead of the force option do an option exit-if-issues It seems users prefer to have the file even with issues
• homogeneity on entry names. Should all be call entryXXXX (/closes #26 (closed))