Sherpa Prototype

Adding a dummy test from the view is now possible

Able to remove tests from tests' view

output & tmp variables have now their init values from the header model used for evaluation in evalProgram, more specifically varsExtract. The header's view makes these editable. Presentation of the header's view has been modified a bit.

oops forgot to make the tests descriptions editable too

Tests are editable now. Bit or refactoring in prepareEditables, still much work needed there. In addition prepareEditables & genSimpleHandler need to be factored since they are being used in both TestsView.js & HeaderView.js

programs headers now have a doc property for the author to explain what the program is about. it's editable which led to some refactoring of prepareEditables. Still some improvements needed there but for now it's working
new logError function in org.sherpa to make sure the errors we want to deliverto the programmer will be redirected later to a specific div

Improving JS quality; removing the indexEA index in renderHeader & renderVarList by using editableArray[editableArray.length] to keep adding new elements to the end of this array

fixed missing of 2nd parameter to editable in prepareEditables from HeaderView.js which led to some layout issues when editing

adding some documentation

Essentially updating the header / tests / programs models when variable names are modified. Updating the header model when variables roles are modified.
Functions are in sherpa.js for now; get it working now, refactor later
FIXED - nasty bug in evalProgram / evalStatement from edits.js which led to a JS infinite loop apparently due to so local variables not defined with var