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
close dropdown on inline editor close or editor resize
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
use ls-remote to compare HEAD and then reflog as a backup
fix returning reflog promise
* 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
allow shell git info to be optional
Merge branch 'master' into jasonsanjose/build-prop-keys
Replace uses of doc.url with _server.pathToUrl()
Merge branch 'master' into jasonsanjose/build-prop-keys
Add border-width in CSSCodeHints/CSSProperties.json
Add event specifications to NodeConnection
build-config task to be used by concat/minify build process
Fix doc-out-of-sync handling for non-live HTML documents and generalize the logic so it will work for any non-live doc
Add unit test for 5317 (JS portion)
Add status checks to unit tests for cases where the live doc shouldn't be marked dirty
added pointer-events to CSS Code Hints
Merge pull request #6126 from adobe/nj/issue-5317

Replace uses of doc.url with _server.pathToUrl()
use capture event handler
Add css property filter in CSSCodeHints/CSSProperties.json