Russian i18n tutorial
Latvian translation RC-update
Latvian translation fixes
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
Create start-forms.md
Merge pull request #5243 from Benn/patch-2

French start-forms.md
grammar fix

with help of ##English on freenode :)

fixes #5244
review install guide
added unit tests for #5249
Fixes #4275: Added `removeChildren()` to `yii\rbac\ManagerInterface` and implementations
Fixes #5088: new password reset token is now generated only if previous one was already used or expired
Added upgrade note about #4275
Update README directory structure [skip ci]
Fixed issue with timezone conversion in formatter

related to #5128
skip unsupported things on 32bit system
more guide.
typo fix [skip ci]
Update start-forms.md