Feature to gather SNMP Walk, use as Pseudo Device, and Browse Objects

* fix anomalous name

* add gather worker

* fix encoding of binary storage

* store results back to job

* now parsing mbis report to translate

* fix the broken report parser

* rename gather to snapshot

* implement walk code copied from SNMP::Info

* can now bulkwalk and parse mibs report and store resolved walk in cache

* add func/glob aliasing broken

* better aliasing

* implement aliasing from globals and funcs

* fix regexp for matching netdisco-mibs report

* fake cache entry for all ND2 methods called, add comments

* also save to logs/snapshots/IP

* add doc for netdisco-do

* add is_pseudo column to device table

* support for loading cache for pseudo devices

* check for hrSystemUptime as well as sysUpTime for snmp connect

* display pseudo devices with yellow pill for name

* color all cells for layers for pseudo

* no need to b64 encode binary data in scalars as we b64 whole thing after

* tweaked uptime check

* store snapshot to database instead of Job

* expose snapshots in device details tab

* small ux improvements on snap download

* fixes for errors in subnet mask searching

* hide snapshot management for pseudo devices

* update to use new netdisco-mibs object cache

* update for new format oids file

* start of work on loading walk into db for browsing

* store values and meta

* add auto increment col and oid index to browser

* start web plugin for browser

* add virtual search for oid children

* have all oid in separte table (60 seconds load on my laptop)

* rename table and add relation

* store oid as int array

* fix sql for children

* make jstree start working

* working very slow tree expand

* fix to work when first displaying tree

* store both oid and oid_parts

* simplify SQL to speed up (more complicated perl)

* fix sql bug, add better index, prettify tree

* render the snmp node detail

* add node template, make scrollable, pretty print data values (insecure)

* store munge hint

* some dubious code to munge the data

* make sure to filter by IP on device_browser

* make safer the rendering of value data (but need to come back to key ordering)

* fix sorting on object values

* limit the opening of child nodes to keep response good and unclutter

* factor out the munge and make safer

* reject unknown mungers

* show the munger and option (not working) to change

* additional js for munge select

* complete custom munge

* change so that saving to database is only at CLI and on request

* hide snmp tab if no browser rows in the db

* add helpful message when no browser rows for the device

* stub handler for search and add recurse control

* working search

* minor ui fixes

* implement typeahead for leaf search

* limit rows in typeahead

* make sure device_browser is visited in delete and renumber

* add requirements for this branch

* update manifest

* make sure node search and typeahead are restricted to current device only

share/views/ajax/device/details.tt

@@ -180,6 +180,24 @@
         <input type="hidden" data-form="nbtstat" value="[% d.ip | html_entity %]" name="device"/>
         <button class="btn btn-info btn-small nd_adminbutton" name="nbtstat">NBTstat</button>
 
+        [% IF NOT d.is_pseudo %]
+        <span class="dropdown">
+          <button class="nd_snap_btn btn [% d.has_snapshot ? 'btn-success' : 'btn-info' %] btn-small dropdown-toggle" type="button" id="snapshotmenu" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
+            Snapshot
+            <span class="caret"></span>
+          </button>
+          <ul class="dropdown-menu" aria-labelledby="snapshotmenu">
+            <input type="hidden" data-form="snapshot_req" value="[% d.ip | html_entity %]" name="device"/>
+            <li><a href="#" class="nd_adminbutton" name="snapshot_req"><i class="icon-edit"></i> Create</a></li>
+
+            <li class='nd_snap_func [% 'disabled' UNLESS d.has_snapshot %]'><a href="[% uri_for('/ajax/content/admin/snapshot_get') | none %]?device=[% d.ip | uri %]"><i class="icon-download-alt"></i> Download</a></li>
+
+            <input type="hidden" data-form="snapshot_del" value="[% d.ip | html_entity %]" name="device"/>
+            <li class='nd_snap_func [% 'disabled' UNLESS d.has_snapshot %]'><a href="#" class="nd_adminbutton" name="snapshot_del"><i class="icon-trash"></i> Delete</a></li>
+          </ul>
+        </span>
+        [% END %]
+
         <button class="btn btn-danger btn-small pull-right"
           data-toggle="modal" data-target="#nd_devdel" type="button">Delete</button>