add generate_opam_update_list to make clean
add opam_update_list to make clean
update DEP_CONTENT_GEN for opam2web

add `script/generate_opam_update_list` to `DEP_CONTENT_GEN`
Pre-load the edit hover image
Fix edit hover image dimensions
Update basics.md

(ocamltop -> ocaml) for 2 things, pointed out in https://github.com/ocaml/ocaml.org/issues/453
Slightly improve the Map and Set tutorials

Fixes https://github.com/ocaml/ocaml.org/issues/455
Require a monospace font when "Droid Sans Mono" is not available

Fixes https://github.com/ocaml/ocaml.org/issues/456
Provide official logos

Fixes https://github.com/ocaml/ocaml.org/issues/44
Update index.md

Add link to EPTCS
OCaml 2014: Update index.md

Add link to EPTCS
Merge pull request #457 from garrigue/patch-1

Update index.md
Create modules.zh.md
Serve the logos from ocaml.org

Fixes https://github.com/ocaml/ocaml-logo/issues/2
Add link to the Logo page in the footer
Create null_pointers_asserts_and_warnings.zh.md
add note to readme about limiting forks
reduce number for forks
Remove duplicate String.trim since OCaml ≥ 4.01.0 is required
Do not work around the absence of compiler-libs (OCaml ≥ 4.01.0)