..logbook.viewer: NPE fix, no need to set null selection

Change-Id: I78deef91ce15cda784c628456b5ead8aeef2af23
..LogEntryTable: add multi line support, fix the time column to
display date and time.

Change-Id: I2dc6cc5447d975f8393eb5e65be5363812f6b7cd
..LogEntryTable: the attachment column list number of attachments

Change-Id: Idef62cdd99d195a69da0a91a9de05d9f60450579
..epics.util: adding a prototype TimeParser, a helper class to parse
user friendly time expressions like last n mins or n hours ago

Change-Id: Ib4f802d824f4da290ed7c70e9da51e9266df67c0
..logbook: adding autocomplete support

Change-Id: I244e724ceef80d3df5b60aaa4a16eb5d700f1873
Merge branch '3.2.x' of ssh://git@github.com/ControlSystemStudio/cs-studio.git into 3.2.x