Create start-hello.md
Update start-hello.md
Update start-hello.md
Merge pull request #5222 from Benn/patch-1

[skip ci] Create start-hello.md
jquery .val() not .value

In line 180. 
It should be .val() instead of .value.

This is my first edit.
Update tutorial-template-engines.md

just fixed typo
Merge pull request #5229 from unti1x/patch-1

[skip ci] Update tutorial-template-engines.md
Merge pull request #5228 from kshitizsingh/patch-1

[skip ci] jquery .val() not .value
Update README.md

Updated instructions for the current reality.
Merge pull request #5235 from githubjeka/patch-1

[skip ci] Update README.md  instruction for install core framework.
Russian i18n tutorial
Latvian translation RC-update
Latvian translation fixes
Issue 5160: Update advanced app to use bootstrap ActiveForm
Issue 5160: Update base app to use bootstrap ActiveForm
Adjusted framework readme
Merge pull request #5238 from mikehaertl/master

Update app templates to use bootstrap ActiveForm
Merge pull request #5237 from Haran/latvian-translation

[skip ci] Latvian translation and Russian i18n guide
new translation
update Chinese guide.