query-result directive can display object/array type values
the widget will not change paused state on refresh
line chart can display data series of category type
added a filter and functions for logquery
set margin of pager to 0
added precision option to size converter, added option about visibility of filter in tree
fixed a bug that custom events won't be fired when changing program status. it can pass action & arguments on load/resume program.
Merge branch 'uidev'