Reactive value now used to access the loaded results.\n
Implemented a way to ouput warning messages to different UI components.

This was based on Joe Cheng's suggestion: tableOuput and renderTable
are replaced by htmlOutput and renderText, and a function tableAsHTML
is implemented in global.R. This allow to render error messages as text
and real results as table.
Created a skeleton of bioC package
Filled in basic package skeleton, except for the documentation.
Added documentation, adjusted the datasets and their location.
Removed the unnecessary pagedServer file.
Moved gimp images out of the git repository.
Changed the order of the navbar tabs.

The goal is to emphasize the visualization functions of the GUI
and put the other functions at the end, since they are 'bonus' functions.
Fixed the bug which prevented R object to be loaded.
Added 'work-in-progress' messages to unfinished pages for submission to bioc.
Corrected the description.
Changed the example dataset for a richer dataset.
Arnaud added to author list
Made the 'Load result' tab the default page
Adjusted default values for the 'Protein view' tab.
Corrected 'work in progress' messages.
First error handling messages put in the 'Load results' tab.
Added the possibility to pass a dataset as a parameter directly
to the function call: shinyTANDEM(dataset=my.rTResult.object)
Changed the format of the NEWS file