records: fix for `583__b` in data model

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
histograms: Flot example code

* Adds Flot example code and link to github for examples.
  (closes #431) (PR #468)
histograms: D3 example code

* Adds D3 example code and link.  (closes #432) (PR #469)
histograms: R example code

* Adds R example code.  (closes #433) (PR #470)
CMS: update of `cms-tools-ispy.xml`

* Updates `cms-tools-ispy.xml`.  (closes #424) (PR #461)
CMS: update of `cms-tools-ana.xml`

* Updates `cms-tools-ana.xml`.  (closes #424) (PR #462)
CMS: new `cms-tools-dimuon-filter.xml`

* Adds new file `cms-tools-dimuon-filter.xml`.  (closes #412) (PR #459)
docs: new file `cms-tools-dimuon-filter.xml`

* Updates installation instructions after addition of new file
  `cms-tools-dimuon-filter.xml`.  (see PR #459)

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
ALICE: new external resources record

* Creates `alice-external-resources.xml`.  (closes #384) (PR #464)
docs: new file `alice-external-resources.xml`

* Updates installation instructions after addition of new file
  `alice-external-resources.xml`.  (see PR #464)
LHCb: new file `lhcb-tools.xml`

* Creates new file `lhcb-tools.xml`.  (addresses #320) (PR #457)
collections: fix "error" when coll. name is wrong

* redirects to “404” page when collection name given is doesn’t exist
* ( closes #452 )
UI: fixes bcg-color in "404" pages
CMS: external VM link -> opendata-link (recid-250)

* (closes #472)
UI: fixes dropdown menu overlapping

* ( closes #473)
UI: adds a homepage alternative as '/home8'

* ( addresses #467 )
UI: fixes/reverts logo to previous state
ALICE: new record for VM image

* Adds new record for ALICE VM image.  (addresses #477) (PR #479)
docs: new file `alice-vm-image.xml`

* Updates installation instructions after addition of new file
  `alice-vm-image.xml`.  (see PR #479)
LHCb: addition of derived dataset records

* Creates `lhcb-derived-datasets.xml`.  (addresses #320) (PR #456)