Integrate Laurent's changes
Describe Web Interface

Add initial descriptions for TVB web sections.
Intermediate commit to Architecture section
Review images refered in Web-UI section.

Add some files in the ignore list, to avoid multiple commits
Cleanup
Add print-screens with different TVB viewers
Review text in UI section
Descripe DataTypes and Traits

Review architecture.tex, by relocating sections for DataTypes and
Traits. Add code example from Connectivity DataType.
Review Adapters chapter and the way images are displayed

Place some figures on a single column.
Fill table with available TRAIT attributes
Review text
Small text review
Small review in UI.tex
Merge pull request #1 from liadomide/master

Work on Architecture and UI chapters