started redesign of system browser:
- removed buttons and added corresponding functionality into the menu
- moved menu button to the right
- title aligned to the left
- removed gradients

further UI/layout simplifications to follow
per default, only use the path segment of the codebaseURL
in the locationInput edit.
further simplification of SystemBrowser UI:
- removed opacity for windows
- created rightClickMenu for LocationInput-Edit to avoid the need for the buttons 'Codebase' and 'Local'
- removed additional line for LocationInput-Edit, now only above left pane
- changed default height for browsers: since space for command buttons and LocationInput has been removed, less height is now required to make it look good
- removed forgotten debugger statement
- improved ratio between source and list panes in defaultconfig.js
remove unneeded 'world' parameter from getInitialViewExtent and all client usages
lively.ide.BasicBrowser: collapsing and expanding the nagivation panes
lively.ide.BasicBrowser: aded methods for expanding and collapsing navigation panes. UI integration to be done.
- refactored the creation of buttons for the titlebar.
- added button for browser to toggle collapse/expand of navigation panes.
- tbd: consider resizing for expanding
fixed showMenuMorph in Window by remembering menuButton
removed connectButtons method in TitleBar, no longer needed
fixed adjustForNewBounds in TitleBar
fixed showMenuMorph in Window by remembering menuButton
rename
fix for opening browsers and their menus
refactoring
remove typo
fixed connection issue between targetUrl and codebase at startup of browser
no shadows for text labels
SCB: resizing in source-only-view gets reflected in full-view
SCB: builds a complete new SCB browser on serialize

instead of reusing just the old window, while still building a new
SystemCodeBrowser
SCB: cleaned up recent changes to the SCB