fix #691
Decomposing study information tab
Decomposing raw data tab
Decomposing sample template tab
Moving the relevant divs to their UIModules
Decomposing the raw data editor tab to its own module
Removing unused import from the template
Moving the raw data editor tabs to the raw data tab
Breaking the study_handlers.py file in multiple files
addressing comments
Initial layout of preprocessed data tab
Simplifying the display template function of the description handler
Reducing the amount of work done in the template
Removing unused variables
Passing the study around so we can minimize accesses to the db
Reducing the calls to raw
Simplifying template parameters for the sample template tab
Passing the study to subtabs instead of the study id, to reduce accesses to the database
Reducing DB accesses
Moving the preprocessed information from the raw data tab to the preprocessed tab