Add `_` to some term constants for consistency.

Terms changed:
`CONCATMAP`
`ORDERBY`
`TYPEOF`
`FUNCALL`
`FOREACH`
`GEOJSON`
`TO_GEOJSON`
Revert change to `GEOJSON` terms.
Reverse method aliases in `func.rb` to maintain old methods.
Revert change to `FUNCALL` term.
stash
encode web assets into C++
Got static web assets to work
python 3 compatible weba ssets script
Added web_assets.hpp
Fix web assets dependencies in makefile
use map::find instead of map::at
Use std::string for static_web_assets
fixing bad assert in combining server down/ghost issues
Add missing dependency on web_assets.o to rethinkdb-unittest
Suppress complaints about unused mutex_assertion_t::acq_t and similar types in release mode.
Merge branch 'reql_admin' of github.com:rethinkdb/rethinkdb into reql_admin
Make watchable_variable_t.set_value() check for spurious updates.
Merge branch atnnn/web into next

Review 2203 by @tryneus
Closes #1093
Change the shebang from python3 to python
Merge pull request #3147 from grandquista/grandquista/standard_term_name

Add `_` to some term constants for consistency.