Updated the return values (comments/docs) of a couple of methods.
Fixed various typos and some additional phpdoc.
Merge pull request #4199 from tomzx/fixes/docs-to-4.1

Updated the return values (comments/docs) of a couple of methods.
Fix comments.
Fixed a few typos.
Merge pull request #4206 from paulofreitas/4.1

Fixed a few typos.
Add hyphen.
Shorten line.
removing starts_with() in favor of strpos()
Improvements
FormBuilder::checkbox can't be checked without session

If the value of FormBuilder::session is null, it’s not possible to set
a checkbox to checked.
Test checkbox without session.
Ignore Thumbs files
Stashing limit/offset query values before performing total pagination count

Some database engines return zero, when using the count aggregate on a query with limit and offset. Just followed the same pattern for stashing the 'orders' clause before performing a count on the query, and adding back to the query when done.
Pivot updates recorded only if something updated
Merge pull request #4241 from kesimard/patch-2

Ignore Thumbs files
Fix associate on MorphTo
decrement typo

ref https://github.com/laravel/framework/pull/4251#issuecomment-41440474
Merge pull request #4252 from pmoust/patch-2

decrement typo
Fix typo in Manager.php

s/their/there