[pl] fix false alarms, detect more error variants
[pl] false alarm fix, thx to Piotr Szyszka
[de] fix wrong suggestion (was: 'km/hn', now 'km/h')
[de] change order of suggestions to work around bug with 'startlower'
[de] fix one false alarm
tiny code formatting cleanup
small javadoc improvement
[en] [de] add a new rule that checks for a space character between sentences
code cleanup: improve variable names
small code cleanup
exceptions (!= IOException) were swallowed - now show all exceptions in a popup, so internal errors don't get hidden
[de] fix false alarm
[de] fix false alarm: "einen Hochwasser führenden Fluss"
[de] fix false alarm: "nichts Wichtigeres"
[de] detect agreement problem with participle: "die erwähnt Konferenz" -> "die erwähnte Konferenz"
[de] new rule: "bitte prüfen sie" -> "bitte prüfen Sie" (etc.)
[pt] activate SentenceWhitespaceRule for Portuguese
fix order of rules (just so that the "specific to ..." comment is correct again)
[ca] Improved rules ACCENTUACIO_VALENCIANA
[eo] add rules DUM_V and PRI_V.