GatingSet.sql : added container.EntityId column to be passed into the Delete.r script in order for the Rlabkey package's labkey.deleteRows() to work properly

Delete.r : this new file added, which is used to remove analyses from a project/study, part of the Preprocessing UI; a data base entry corresponding to the specified analysis is removed; if there are no more references to the data on disk referenced in the removed data base entry, then this data on disk is also removed

OpenCytoPreprocessing.r :
-to make things unique, instead of files names, now files unique ids are used as main inputs
-file names are only used in parseWorkspace() for subsetting the files
-conversion of pheno data columns to factors was buggy; now fixed
-API changed not to 'tar' files up, now just folders are created on disk
-to make the Viz plotting process faster the files associated with an analysis are saved to db

opencyto_preprocessing-0.00-0.01.sql : files table added to keep track of files associated with an analysis (see above)

ClearableComboBox.js : a convenient overwrite to fetch a given field out of the currently selected record in a combobox

OpenCyto.css :
-a fix for not cutting of radio buttons in Safari browser
-a simpler-panel-header class: white background
-removed not needed styles for GridPanel and misalignment of the right most column and its header disappeared

OpenCytoPreprocessing.js :
-close #6: the order of the study variables and the file names is normalized via sorting, before being written to the db
-since file ids became needed in the back-end, SQL queries had to be modified to include those unique row ids
-strGatingSet and cbAnalysis added for the 'Delete' UI: combo box with analyses and a delete button; tab panel added
-status update related to the set of study variables modification has been removed
-regrouped reused code into mask() and unmask() methods
-'Process' button removed - its role now plays the 'Next' button
-delete analysis configure object added used with the new LABKEY.Report.execute() API
-GridPanel gets built-in column lines and white header
-processHandler() abstraction method added
-navHandler() modified according to the new design