Easier contraction typing (#289)

* removed isPunctiationPartOfWords hack and created a new contraction input method that allows typing just anything, instead of predefined list coming from the dictionary

* updated the common compound words and contractions in Bulgarian, Dutch, English and French

* removed some non-sense and rarely used English words

* fixed crashing when trying to find words with apostrophes in the database

* fixed a crash when trying to capitalize single character strings

* improved dictionary validation at build time: spaces are now disallowed

assets/fr-utf8.csv

@@ -1,3 +1,26 @@
+c'
+ç'
+d'
+j'
+l'
+m'
+n'
+s'
+t'
+y'
+qu'
+-ce
+-ci
+-il
+-la
+-toi
+-elle
+-nous
+-vous
+jusqu'
+lorsqu'
+puisqu'
+quoiqu'
 abaissa	59
 abaissable
 abaissables