Merge pull request #1162 from olliephillips/master

Added 'asset' to concrete/config/app.php aliases
Refactoring MenuItems, starting to make work; adding overrideable_core_class
updates
add t-function to backup single page
removed unreachable return & psr2
Redundant closing php tag removals, php short tag removals
Missing = sign for append
foreach loop fix
stop making php auto typecast
missing $ on variable definitions
removed misleading return on void parent function
Get hashed cache file name with sha-256

same as Doctrine FileCache
Update form.php
Fix namespace issue with instanceof operator
menu items
Merge pull request #1165 from concrete5russia/patch-3

add t-function to backup single page
Merge pull request #1167 from ExchangeCore/misc-fixes

Misc fixes
Merge pull request #1169 from hissy/file-page-cache

Fixes file page cache problem with long collection path
Add a header to generated files
tweaks to help