implemented removing of quotes
Merge remote-tracking branch 'origin/suggest-dev'

Conflicts:
	src/tools/srsoftware/PrefixTree.java
added unset method
improved suggesting
removed unused method trim(...)
improved word partitioning and word handling
implemented hiding of popup, if cursor not at end
improved cursor hiding
added null checks for dictionary search,
removed debug output
further improvement in text fractioning and word recognition.
prevented adding words to dictionary that are shorter than 3 chars
Merge branch 'suggest-dev'