Minor fixes on Shortcuts-page
Minor fixes on Main-page
Added Cancel mode to shortcuts
Merge branch 'master' into docu/11_3/1

Conflicts:
	chm_files/docs/shortcuts.html
Basic_help - General Revision

* Consistent Use of <kbd>-css
* Enhanced Anchors and links
* Consistent notation on several Topics (for example: Paste Mode <-> Paste mode <-> paste mode)
* Small reorganizations
* More smaller enhancements
Basic_help - General Revision - More minor corrections
Channels - General Revision

* Consistent Use of <kbd>-css
* Enhanced Anchors and links
* Small reorganizations
* More smaller enhancements
Merge pull request #33 from hoppfrosch/docu/11_3/1

Revision of several documentation pages