Allow sub-folders in Analysis

[schatzsc]

Depending on the type of usage, the "Analysis" tab - in particular for Reactions - can contain quite a number of specta/data, for example from different fractions of a column chromatographic purification or sequential crystallization attempts, which can made this tab quite difficult to handle.

It would be highly desirable to be able to organize the data in the Analysis tab into different sub-folders depending on the different fractions/sample materials obtained