GO Filter Interface

[jdopazob]

• Implement a text box by means of which GO terms can be selected
• Implement a list of the selected GO terms from which terms can be removed
• Implement a graphical view of the GO hierarchy to select the level to select entire branches of the GO hierarchy
• The selected terms can be used to filter in or to filter out

[mermegar]

Implemented GO filter interface with all the requirements.