Update index.html

Translated the alternative image text to pt_BR.
From "A screenshot showing CSS Quick Edit" to the equivalent "Uma screenshot mostrando o editor rápido de CSS"
Adding condition for skipping symlinks when installing extensions via the extension manager

When installing extensions that have symlinks via the extension
manager, they will fail with a message regarding an invalid zip file.
This can be tested with
https://github.com/MiguelCastillo/Brackets-SymbolicLinks
sprint 34 - czech language

updated
close dropdown on inline editor close or editor resize
Update Tern and Acorn to the latest.

This fixes #6018 and possibly others.
change build.prop to (1) work when on a detached head during jenkins build (2) use bash compatible property key names and (3) include shell git info
Update strings.js
use ls-remote to compare HEAD and then reflog as a backup
fix returning reflog promise
Grammatical improvements(Swedish)

Minor improvements to the Swedish language
* Whole bunch of docs clarifications & type-annotation fixes
* Clarify Save As dialog cancelation handling -- and fix bug where promise
was never resolved in degenerate doSave() case
* Improved some console messages: more explanatory KeyBindingManager error,
more info on Directory exceptions, clarify consequence of LanguageManager
error
* Fix misleading use of "document" in Close Others API & related code naming
* Improve docs for adding new locale translations
Update CodeMirror to the latest including ES6 support
allow shell git info to be optional
Merge pull request #6117 from adobe/rlim/codemirror-with-es6

Update CodeMirror to the latest including ES6 support.
Merge pull request #6081 from gero3/patch-1

Update strings.js
* Fix bug #6118 (Scrollbar search tickmarks duplicated inside inline editors) --
Be careful to use jQuery selectors that won't find additional matches when
an inline editor is nested inside the target editor.
* Fix bug (injected at ca11256e) where exceptions are thrown on each window
resize.
* Improve accuracy of height/offset calculation used when no scrollbar
is present.
Avoid wrapping in inline editors when they get too narrow
Merge branch 'master' into jasonsanjose/build-prop-keys
Move the nowrap attribute to the inline text editor container so it doesn't affect other kinds of inline editors
Replace uses of doc.url with _server.pathToUrl()