Did some linking for the documentation

Signed-off-by: Alexander Cogneau <alexander.cogneau@hotmail.be>
Added --class option to database seeding examples.
Route::resources no longer uses `id` as a parameter

The resource is the id parameter now.
getting executed sql querie from the QueryLog
Improve array_fetch example to show the difference with array_pluck
HTTP Basic Authentication workaround under Apache FastCGI
Added a missing * to make View creators bold
Merge pull request #448 from szyszec/patch-1

Added a missing * to make "View creators" bold
added short paragraph on accessing inserted id
added paragraph on exception handler ordering
Expanded info on environment detection via machine name
Missing ' in controllers doc, section resources
Simple typo
Merge pull request #455 from besnik81/patch-1

Simple typo in docs
typo on validation.md
Add extending the framework to docs.
Update ToC.
Update extending.md
Document other select helpers for range, years and months
Fixed missing single quote