handlersearch: Allow all characters by escaping FTS

Escape FTS queries by simply treating everything as string.
Though this way a user cannot use operators, it's an improvement
over how it was done before.

Closes: #7

database/pagedaosqlite.h

@@ -8,6 +8,9 @@
 #include "sqlitedao.h"
 class PageDaoSqlite : public PageDao, protected SqliteDao
 {
+  private:
+	std::string ftsEscape(std::string input);
+
   public:
 	PageDaoSqlite()
 	{