Confusion Matrix: Improve matrix presentation
Confusion Matrix: Improve matrix presentation

1. For big matrices (>120 characters in headers):
  - switch to equal and smaller but resizeable column width
  - set tooltips for column headers

2. Add tooltips for matrix cells

marinkaz/orange3,kwikadi/orange3,kwikadi/orange3,cheral/orange3,kwikadi/orange3,cheral/orange3,qPCR4vir/orange3,kwikadi/orange3,marinkaz/orange3,marinkaz/orange3,kwikadi/orange3,marinkaz/orange3,qPCR4vir/orange3,qPCR4vir/orange3,marinkaz/orange3,qPCR4vir/orange3,qPCR4vir/orange3,cheral/orange3,cheral/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3,kwikadi/orange3,marinkaz/orange3