documentation: first step to update the UserGuide

documentation: first step to update the UserGuide

changelog:

- sec. A.3.3: menu of outline has changed -> therefore correction in
	- sec. 3.7 of Tutorial
	- sec. 2.5: of UserGuide
	- sec. 6.2.1: of UserGuide
- sec. A.3.4: name changed to "source pane" -> therefore correction in
	- sec. 2.1 of Additional
	- sec. 6.12.4: of UserGuide
- sec. A.3.5: name changed to "Messages Pane"
- sec. A.3.15 -> A.3.6: Toolbar menu shifted
- sec. A.3.6 -> A.6.4: view Document menu shifted -> therefore correction in
	- sec. B.20 of UserGuide (not yet in Japanese)
	- sec. C.7.2 of UserGuide (not yet in Japanese)
	- sec. 2.1.1 of Tutorial (not yet in Japanese)
	- sec. 2.1 of Additional (not yet in Japanese)
	- sec. 7.3.3.4 of Additional (not yet in Japanese)
- sec. A.3.7 -> A.6.5: view other Document menu shifted
- sec. A.3.8 -> A.6.6: Update view menu shifted
- sec. A.3.9 -> A.6.7: Update view other menu shifted
- sec. A.3.10 -> A.6.8: view master menu shifted
- sec. A.3.11 -> A.6.9: Update master menu shifted