Update links from forge -> eng docs

Summary: This commit updates any links in our setup script that used to go to Forge to their new eng doc pages (or in the case of our styleguides then to our Github repo).

Test Plan: Fingers crossed

Reviewers: benkraft, csilvers

Reviewed By: benkraft, csilvers

Subscribers: csilvers

Differential Revision: https://phabricator.khanacademy.org/D45306

.vim/ftplugin/css.vim

@@ -1,3 +1,3 @@
 " Khan Academy style guidelines: 4-space indents
-" https://sites.google.com/a/khanacademy.org/forge/for-developers/styleguide/html-css-etc
+" https://github.com/Khan/style-guides/blob/master/style/css.md
 setlocal expandtab ts=4 sw=4 sts=4

.vim/ftplugin/javascript.vim

@@ -1,3 +1,3 @@
 " Khan Academy style guidelines: 4-space indents
-" https://sites.google.com/a/khanacademy.org/forge/for-developers/styleguide/javascript
+" https://github.com/Khan/style-guides/blob/master/style/javascript.md
 setlocal expandtab sts=4 sw=4 ts=4

.vim/ftplugin/less.vim

@@ -1,3 +1,3 @@
 " Khan Academy style guidelines: 4-space indents
-" https://sites.google.com/a/khanacademy.org/forge/for-developers/styleguide/html-css-etc
+" https://github.com/Khan/style-guides/blob/master/style/css.md
 setlocal expandtab ts=4 sw=4 sts=4

.vim/ftplugin/python.vim

@@ -1,5 +1,5 @@
 " Khan Academy style guidelines: 4-space indents
-" https://sites.google.com/a/khanacademy.org/forge/for-developers/styleguide/python
+" https://github.com/Khan/style-guides/blob/master/style/python.md
 setlocal expandtab ts=4 sw=4 sts=4
 
 " PEP-8 wants this (as does Khan linters)

mac-android-setup.sh

@@ -146,4 +146,4 @@ install_watchman
 install_react_native_dependencies
 
 update "Done! Complete setup instructions at \
-https://sites.google.com/a/khanacademy.org/forge/for-khan-employees/-new-employees-onboard-doc/developer-setup/mobile-setup/android-setup"
+https://docs.google.com/document/d/1QMMgvycznCezczZojEdAk8WHm6oTDFwi6bEutYQJ40o"

mac-ios-setup.sh

@@ -69,4 +69,4 @@ install_watchman
 install_react_native_dependencies
 
 update "Done! Complete setup instructions at \
-https://sites.google.com/a/khanacademy.org/forge/for-khan-employees/-new-employees-onboard-doc/developer-setup/mobile-setup/ios-setup"
+https://docs.google.com/document/d/15FxEYI7l_p4mMv3SYFSIM6cxiOz6I4pxEvzDLFle-eE"

setup.sh

@@ -61,7 +61,7 @@ check_dependencies() {
     # You need to have run the setup to install binaries: node, npm/etc.
     if ! npm --version >/dev/null; then
         echo "You must install binaries before running $0.  See"
-        echo "   https://sites.google.com/a/khanacademy.org/forge/for-khan-employees/-new-employees-onboard-doc/developer-setup"
+        echo "   https://docs.google.com/document/d/1aD1K0t8BhJABMug14zFZE_Ea73am0EiU2szjcsILkiU"
         exit 1
     fi
 }
@@ -234,7 +234,7 @@ install_deps() {
     sudo easy_install --quiet pip
 
     # Install virtualenv.
-    # https://sites.google.com/a/khanacademy.org/forge/for-khan-employees/-new-employees-onboard-doc/developer-setup/using-virtualenv
+    # https://docs.google.com/document/d/1zrmm6byPImfbt7wDyS8PpULwnEckSxna2jhSl38cWt8
     sudo pip install -q virtualenv
     if [ ! -d "$ROOT/.virtualenv/khan27" ]; then
         # Note that --no-site-packages is the default on recent virtualenv,