improved ide

source code visualization improved
save File added for saving the program
token information extendended in token view
add untracked changes
Merge branch 'gui' of https://github.com/swp-uebersetzerbau-ss13/fuc into gui

Conflicts:
	code/visu-gui/visu-ide-text/src/swp_compiler_ss13/fuc/gui/text/Text_Model.java

merge problem fixed