relates to https://github.com/marijnh/CodeMirror/issues/314

Issue #2237

Conflicts:
	addon/comment/continuecomment.js
	lib/codemirror.js
        mode/puppet/puppet.js

Closes #2075

Issue #2182

Closes #2247

Issue #2233

Closes #2237

Closes #2248

Issue #2219

add docs that when completions are object they can have a from: and to:
that will be used by pick.

Make sidebar in manual scrollable for small screen especially usefull
when `Programming API` is unfolded

seem to look nice on Chrome and Firefox Osx, (scrollbar do not appear,
except when scrolling on Chrome) but should maybe be tested on linux.

It causes autozooming on some mobile platforms.

Closes #2235

Even when the editor it set to resize to fit content.

Closes #2239

... so that '|' can be used as an OR in regular expressions or as a literal
character, depending on whether it was escaped or not.

1) fix the escaping of '(' and ')' in search expressions.
2) get the correct placement of the '\' in characters that need to introduce escaping.
3) change the capture unit test to expect that '(' and ')' should be escaped, as does real vim.

adds escaping for '|' to bridge a difference between javascript and
vim regex flavors.

take the escaping a little lower level so that it affects '/' searches
as well, not just '%s/<regex>/<replacement>' searches.

So that calling it on a block in sequence won't get stuck with an
outdated state after lines whose indentation doesn't change.

Closes #2227

Mode dependencies are now loaded in a saner way.

Conflicts:
	mode/rst/rst.js

Closes #2225

So that it doesn't error when inner modes are missing.

Issue #2224

Previously commands like da<object> only worked with the opening side of the
pair, so you could do da{ but not da}.

I also removed some duplication of calls to selectCompanionObject (at the cost
of switching from map lookup to an if-else chain).

Issue #2223

So that the default mode when this is loaded first is actually a
working mode.

Also: indent the file to correspond to the rest of the codebase.

Closes #2223

Issue #2221

Broken by 32c26302
Closes #2222