fix crash in header

Habitica/src/main/java/com/magicmicky/habitrpgwrapper/lib/models/BasicStats.java

@@ -29,7 +29,7 @@ public class BasicStats extends BaseModel {
     public Float _int;
 
     public Float getCon() {
-        return con;
+        return con != null ? con : Float.valueOf(0);
     }
 
     public void setCon(Float con) {
@@ -37,7 +37,7 @@ public class BasicStats extends BaseModel {
     }
 
     public Float getStr() {
-        return str;
+        return str != null ? str : Float.valueOf(0);
     }
 
     public void setStr(Float str) {
@@ -45,7 +45,7 @@ public class BasicStats extends BaseModel {
     }
 
     public Float getPer() {
-        return per;
+        return per != null ? per : Float.valueOf(0);
     }
 
     public void setPer(Float per) {
@@ -53,7 +53,7 @@ public class BasicStats extends BaseModel {
     }
 
     public Float get_int() {
-        return _int;
+        return _int != null ? _int : Float.valueOf(0);
     }
 
     public void set_int(Float _int) {

Habitica/src/main/java/com/magicmicky/habitrpgwrapper/lib/models/Buffs.java

@@ -25,7 +25,7 @@ public class Buffs extends BasicStats {
     }
 
     public Boolean getSnowball() {
-        return snowball;
+        return snowball != null ? snowball: Boolean.FALSE;
     }
 
     public void setSnowball(Boolean snowball) {
@@ -33,7 +33,7 @@ public class Buffs extends BasicStats {
     }
 
     public Boolean getStreaks() {
-        return streaks;
+        return streaks != null ? streaks : Boolean.FALSE;
     }
 
     public void setStreaks(Boolean streaks) {

Habitica/src/main/java/com/magicmicky/habitrpgwrapper/lib/models/PlayerMinStats.java

@@ -54,7 +54,7 @@ public abstract class PlayerMinStats extends BasicStats {
     }
 
     public Integer getPoints() {
-        return points;
+        return points != null ? points : Integer.valueOf(0);
     }
 
     public void setPoints(Integer points) {
@@ -62,7 +62,7 @@ public abstract class PlayerMinStats extends BasicStats {
     }
 
     public Integer getLvl() {
-        return lvl;
+        return lvl != null ? lvl : Integer.valueOf(0);
     }
 
     public void setLvl(Integer lvl) {
@@ -85,7 +85,7 @@ public abstract class PlayerMinStats extends BasicStats {
     }
 
     public Double getGp() {
-        return gp;
+        return gp != null ? gp : Double.valueOf(0);
     }
 
     public void setGp(Double gp) {
@@ -93,7 +93,7 @@ public abstract class PlayerMinStats extends BasicStats {
     }
 
     public Double getExp() {
-        return exp;
+        return exp != null ? exp : Double.valueOf(0);
     }
 
     public void setExp(Double exp) {
@@ -101,7 +101,7 @@ public abstract class PlayerMinStats extends BasicStats {
     }
 
     public Double getMp() {
-        return mp;
+        return mp != null ? mp : Double.valueOf(0);
     }
 
     public void setMp(Double mp) {
@@ -109,7 +109,7 @@ public abstract class PlayerMinStats extends BasicStats {
     }
 
     public Double getHp() {
-        return hp;
+        return hp != null ? hp : Double.valueOf(0);
     }
 
     public void setHp(Double hp) {

Habitica/src/main/java/com/magicmicky/habitrpgwrapper/lib/models/Stats.java

@@ -16,7 +16,7 @@ public class Stats extends PlayerMinStats{
 
 
     public Integer getToNextLevel() {
-        return toNextLevel;
+        return toNextLevel != null ? toNextLevel : Integer.valueOf(0);
     }
 
     public void setToNextLevel(Integer toNextLevel) {
@@ -26,7 +26,7 @@ public class Stats extends PlayerMinStats{
     }
 
     public Integer getMaxHealth() {
-        return maxHealth;
+        return maxHealth != null ? maxHealth : Integer.valueOf(0);
     }
 
     public void setMaxHealth(Integer maxHealth) {
@@ -34,7 +34,7 @@ public class Stats extends PlayerMinStats{
     }
 
     public Integer getMaxMP() {
-        return maxMP;
+        return maxMP != null ? maxMP : Integer.valueOf(0);
     }
 
     public void setMaxMP(Integer maxMP) {