Added option to treat variables as binary in Sidebar as req in #45

Selecting threshold hides if option is set to FALSE. The thresholdvalue resets to 0 at each change (to avoid possible bugs).
Hidden output on two tabs (part of) as req in #79
Three more tabs to go as req in #79
One more tab to go as req in #79
Finished all tabs as req in #79
Increased version number, it deserves it ;)
Replaced tabs with spaces. Perhaps connected with #81
Added tables with description of boxplots as req in #80
Generalized the plotting option (bugfix)
Added output of table on RCS tab as req in #80

Also some bugfixes (error message avoidance for Boxplot tables).
Implemented table on Logistf tab as req in #80

Changed default selected association variable from Age to Sex.
Help files for some previous commits.
Changed formating of conf. int. output on Logistf table
Fixed bugs - hardcoded references to Demo data
Implemented permutation tests for diff. of samples as req in #61
Implemented linear regression on RCS tab  as req via email
Started work on Mixed models. Renamed some tabs. This is for backup - work incomplete.
In middle of work on mixed models. Backup.
Did not commit last time? Backup.
Mixed models - added table output for the variants req in #77