Update tomcat to fix security problems
diff --git a/server/pom.xml b/server/pom.xml
index bb18b02..a151733 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -31,7 +31,7 @@
     <packaging>jar</packaging>
 
     <properties>
-        <tomcat.version>7.0.94</tomcat.version>
+        <tomcat.version>7.0.99</tomcat.version>
     </properties>
 
     <dependencies>
diff --git a/ui/pom.xml b/ui/pom.xml
index 5d840a5..5eec26f 100644
--- a/ui/pom.xml
+++ b/ui/pom.xml
@@ -36,7 +36,7 @@
         <vaadin.plugin.version>2.1.0</vaadin.plugin.version>
         <vaadin.version>8.0.4</vaadin.version>
         <guava.version>21.0</guava.version>
-        <tomcat.version>7.0.94</tomcat.version>
+        <tomcat.version>7.0.99</tomcat.version>
     </properties>
 
     <modules>