New option 'parseAfterEveryWord' in properties file which determines
whether DepTreeViewer should parse incrementally (after finishing a
word). This option already exists in the preferences but was not
persistent.

Added advice on disabling predicates for incremental processing when
usinge DepTreeViewer or AnnoViewer.

Setting for 'partial' checkbox in DepTreeViewer now defaults to
whether predicate partial is enabled (is enabled by default).