added basic dropdown menu using javascript
added icon arrow down to top navigation
moved top navi to the right and adjusted height to be at the same line with login name and sign out
added Context list to Stackrs:index -> show in drop down
fixed: show only Contexts for current user -> Stackrs:index()
fixed: duplicate variable usage ->  in foreach loop and  as passed variable
added first draft of introductional text to login.page
added mindstackr screenshot
added first draft of feature list that should like to mindstackr image
changed text
added and organized feature list
adjusted text and made one more paragraph
centralized bottom feature list
fixed: rebase error -> missing '}'
changes to headline and context
changes to texts of feature list
css textarea -> added border and increased width and height
css operatorButton -> margin 0 and border #bbb
top navigation -> Contexts links to /contexts
Context colors -> do not skip random amount of colors but according to index