Merge branch 'feature/gitignore' into 'master'

Updated .gitignore to exclude AdditionalConfiguration.php & ENABLE_INSTALL_TOOL

See merge request !1

data/typo3/.gitignore

@@ -11,3 +11,5 @@
 /html/typo3temp/
 /html/uploads/
 !/html/typo3conf/ext/ter*
+/html/typo3conf/AdditionalConfiguration.php
+/html/typo3conf/ENABLE_INSTALL_TOOL