switch travis to php 7.0

don't fail on deprecated function warnings
remove debug

.travis.yml

@@ -1,6 +1,6 @@
 language: php
 php:
-  - 5.6
+  - 7.0
 
 branches:
   only:
@@ -8,6 +8,9 @@ branches:
     - 3.1.x
     - master
 
+notifications:
+  email: false
+
 services:
   - mysql
 

modules/gallery/tests/Xss_Security_Test.php

@@ -29,7 +29,6 @@ class Xss_Security_Test extends Gallery_Unit_Test_Case {
         }
       }
 
-print "checking view $view\n";
       $frame  = null;
       $script_block = 0;
       $in_script_block = false;

modules/gallery_unit_test/controllers/gallery_unit_test.php

@@ -25,7 +25,7 @@ class Gallery_Unit_Test_Controller extends Controller {
 
     // Force strict behavior to flush out bugs early
     ini_set("display_errors", true);
-    error_reporting(-1);
+    error_reporting(E_ALL & ~E_DEPRECATED);
 
     // Jump through some hoops to satisfy the way that we check for the site_domain in
     // config.php.  We structure this such that the code in config will leave us with a