diff --git a/client/src/style/scss/library.scss b/client/src/style/scss/library.scss
index aa1d9d06028..0cdb7e71b74 100644
--- a/client/src/style/scss/library.scss
+++ b/client/src/style/scss/library.scss
@@ -1,10 +1,10 @@
 @import "theme/blue.scss";
 
 .library_style_container {
-    width: 95%;
-    margin: auto;
-    margin-top: 1em;
-    overflow: auto !important;
+    width: 100%;
+    height: 100%;
+    padding: 1em;
+    overflow: auto;
 
     .fa-globe,
     .fa-shield,
diff --git a/doc/source/admin/nginx.md b/doc/source/admin/nginx.md
index 0466a06154a..4e4f5364beb 100644
--- a/doc/source/admin/nginx.md
+++ b/doc/source/admin/nginx.md
@@ -364,7 +364,7 @@ nginx should serve files and edit `galaxy.yml` and make the following changes be
 ```yaml
 galaxy:
     #...
-    upstream_zip: true
+    upstream_mod_zip: true
 ```
 
 Instead of creating archives Galaxy will send a special header containing the list of files to be archived.
diff --git a/lib/galaxy/config/sample/datatypes_conf.xml.sample b/lib/galaxy/config/sample/datatypes_conf.xml.sample
index 64e4c7f11dd..575929c7649 100644
--- a/lib/galaxy/config/sample/datatypes_conf.xml.sample
+++ b/lib/galaxy/config/sample/datatypes_conf.xml.sample
@@ -266,7 +266,7 @@
     <datatype extension="mztab2" type="galaxy.datatypes.proteomics:MzTab2" display_in_upload="true"/>
     <datatype extension="mzml" type="galaxy.datatypes.proteomics:MzML" mimetype="application/xml" display_in_upload="true"/>
     <datatype extension="nmrml" type="galaxy.datatypes.proteomics:NmrML" mimetype="application/xml" display_in_upload="true" description="nmrML is an open mark-up language for NMR data." description_url="http://nmrml.org/schema/"/>
-    <datatype extension="meryldb" type="galaxy.datatypes.binary:Binary" subclass="true" display_in_upload="true" description="MerylDB is a tar.gz archive containing 64 binaries + 64 indexes."/>
+    <datatype extension="meryldb" type="galaxy.datatypes.binary:Meryldb" subclass="true" display_in_upload="true" description="MerylDB is a tar.gz archive containing 64 binaries + 64 indexes." />
     <datatype extension="mgf" type="galaxy.datatypes.proteomics:Mgf" display_in_upload="true"/>
     <datatype extension="wiff" type="galaxy.datatypes.proteomics:Wiff" display_in_upload="true"/>
     <datatype extension="mzxml" type="galaxy.datatypes.proteomics:MzXML" mimetype="application/xml" display_in_upload="true"/>
@@ -924,6 +924,7 @@
     <sniffer type="galaxy.datatypes.binary:Fast5ArchiveGz"/>
     <sniffer type="galaxy.datatypes.binary:Fast5ArchiveBz2"/>
     <sniffer type="galaxy.datatypes.binary:Fast5Archive"/>
+    <sniffer type="galaxy.datatypes.binary:Meryldb" />
     <sniffer type="galaxy.datatypes.binary:PostgresqlArchive"/>
     <sniffer type="galaxy.datatypes.binary:ICM"/>
     <sniffer type="galaxy.datatypes.binary:Idat"/>
diff --git a/lib/galaxy/datatypes/binary.py b/lib/galaxy/datatypes/binary.py
index a3ba94a46d0..81baafa581a 100644
--- a/lib/galaxy/datatypes/binary.py
+++ b/lib/galaxy/datatypes/binary.py
@@ -201,6 +201,34 @@ class CompressedArchive(Binary):
             return "Compressed binary file (%s)" % (nice_size(dataset.get_size()))
 
 
+class Meryldb(CompressedArchive):
+    """MerylDB is a tar.gz archive, with 128 files. 64 data files and 64 index files."""
+    file_ext = "meryldb"
+
+    def sniff(self, filename):
+        """
+        Try to guess if the file is a Cel file.
+        >>> from galaxy.datatypes.sniff import get_test_fname
+        >>> fname = get_test_fname('affy_v_agcc.cel')
+        >>> Meryldb().sniff(fname)
+        False
+        >>> fname = get_test_fname('read-db.meryldb')
+        >>> Meryldb().sniff(fname)
+        True
+        """
+        try:
+            if filename and tarfile.is_tarfile(filename):
+                with tarfile.open(filename, 'r') as temptar:
+                    _tar_content = temptar.getnames()
+                    # 64 data files ad 64 indices + 2 folders
+                    if len(_tar_content) == 130:
+                        if len([_ for _ in _tar_content if _.endswith('.merylIndex')]) == 64:
+                            return True
+        except Exception as e:
+            log.warning('%s, sniff Exception: %s', self, e)
+        return False
+
+
 class DynamicCompressedArchive(CompressedArchive):
 
     def matches_any(self, target_datatypes):
diff --git a/lib/galaxy/datatypes/test/read-db.meryldb b/lib/galaxy/datatypes/test/read-db.meryldb
new file mode 100644
index 00000000000..354da28bc66
Binary files /dev/null and b/lib/galaxy/datatypes/test/read-db.meryldb differ