Fix build errors

src/main/java/wtf/beatrice/nounspicker/commands/subcommands/NounsAddSubCommand.java

@@ -20,7 +20,7 @@ public class NounsAddSubCommand
 
         String pronoun = args[1].toLowerCase();
 
-        if(Cache.dbManager.getPronounId(pronoun) >= 0)
+        if(Cache.dbManager.isPronounValid(pronoun))
         {
             sender.sendMessage("Pronoun already exists!");
             return true;

src/main/java/wtf/beatrice/nounspicker/commands/subcommands/NounsSetSubCommand.java

@@ -19,13 +19,13 @@ public class NounsSetSubCommand
         String mainPronoun = args[1].toLowerCase();
         String secondaryPronoun = args[2].toLowerCase();
 
-        if(!Cache.isPronounValid(mainPronoun))
+        if(!Cache.dbManager.isPronounValid(mainPronoun))
         {
             sender.sendMessage("Invalid main pronoun!");
             return true;
         }
 
-        if(!Cache.isPronounValid(secondaryPronoun))
+        if(!Cache.dbManager.isPronounValid(secondaryPronoun))
         {
             sender.sendMessage("Invalid secondary pronoun!");
             return true;

src/main/java/wtf/beatrice/nounspicker/utils/DatabaseManager.java

@@ -129,6 +129,10 @@ public class DatabaseManager
         return -1;
     }
 
+    public boolean isPronounValid(String pronoun) {
+        return getPronounId(pronoun) >= 0;
+    }
+
     public boolean addNewPronoun(String pronoun, String format) {
         String query = "INSERT INTO pronouns " +
         "( pronoun, format, id) VALUES " +