add new tab icon
DnD improvements: drop on result area, click on tree append to same axis as other dimension elements
select all measures / dimensions for drillthrough
fix if for measures in drillthrough dialog
comment default options for panel bar
css changes for the vertical drop zones
Merge branch 'dropzones' of github.com:OSBI/saiku-ui into dropzones

Conflicts:
	css/saiku/src/styles.css