Modify Confocal Microscopy sub-structure

[strambc]

Add Confocal Microsocpy sub-classes

Laser-scanning confocal microscopy <-- http://edamontology.org/topics________004
Re-scan confocal microscopy <-- http://edamontology.org/topic______Re-scan_confocal_microscopy

Move

1. single-spot confocal microscopy (http://purl.obolibrary.org/obo/FBbi_00000252)
2. array-scan confocal microscopy (http://purl.obolibrary.org/obo/FBbi_00000393)
3. slit-scan confocal microscopy (http://purl.obolibrary.org/obo/FBbi_00000393)

to sub-classes of Laser-scanning confocal microscopy <-- http://edamontology.org/topics________004

[lubianat]

@gouttegd we are doing it at the hackathon here in GIDE; I'll probably try and make a pull request collectively here

[lubianat]

if you have any ideas, just let us know! conversely, if you want to jump into a call and show how you would do it via zoom, it could be fun to