fixed most of indenting and trailing spaces per PSR-2 standard as well as moving trailing spaces from text documents

.editorconfig

@@ -0,0 +1,13 @@
+root = true
+
+; applies to all files
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+; applies only to PHP files
+[**.php]
+indent_style = space
+indent_size = 4

bibtexbrowser-test.php

@@ -1,13 +1,13 @@
 <?php
 /** PhPUnit tests for bibtexbrowser
 
-To run them:
-$ phpunit bibtexbrowser-test.php
+    To run them:
+    $ phpunit bibtexbrowser-test.php
 
-With coverage:
-$ phpunit --coverage-html ./coverage btb-test.php
+    With coverage:
+    $ phpunit --coverage-html ./coverage btb-test.php
 
-(be sure that xdebug is enabled: /etc/php5/cli/conf.d# ln -s ../../mods-available/xdebug.ini)
+    (be sure that xdebug is enabled: /etc/php5/cli/conf.d# ln -s ../../mods-available/xdebug.ini)
 */
 
 // backward compatibility
@@ -245,7 +245,7 @@ class BTBTest extends PHPUnit_Framework_TestCase {
         fseek($test_data,0);
         $btb = new BibDataBase();
         $btb->update_internal("inline", $test_data);
-//     print_r($btb->stringdb);
+        //     print_r($btb->stringdb);
         $this->assertEquals(1,count($btb->stringdb));
 
         // replacing the existing one
@@ -256,7 +256,7 @@ class BTBTest extends PHPUnit_Framework_TestCase {
         fseek($test_data,0);
         $btb = new BibDataBase();
         $btb->update_internal("inline2", $test_data);
-//     print_r($btb->stringdb);
+        //     print_r($btb->stringdb);
         $this->assertEquals(1,count($btb->stringdb));
         $this->assertEquals("2009",$btb->stringdb['x']->value);//
 
@@ -331,7 +331,7 @@ class BTBTest extends PHPUnit_Framework_TestCase {
         $btb = new BibDataBase();
         $btb->update_internal("inline", $test_data);
         $first_entry=$btb->bibdb[array_keys($btb->bibdb)[0]];
-//    $this->assertTrue(strpos('A Book{} $\mbox{foo}$',$first_entry->toHTML());
+        //    $this->assertTrue(strpos('A Book{} $\mbox{foo}$',$first_entry->toHTML());
         $this->assertEquals('A Book $\mbox{foo}$ tt $\boo{t}$',$first_entry->getTitle());
     }