Fix for upgrade errors when there is a permission problem

Signed-off-by: Noteworthy Software, Inc <online@noteworthysoftware.com>
Merge pull request #2495 from nwsw/upgradefix

Fix for upgrade errors when there is a permission problem
readme updates (offline)

Signed-off-by: Antes <antes@simplemachines.org>
Merge pull request #2497 from Antes/readme

readme updates (offline)
Kitty works but kitty also tired :/
! some small updates on readme_upgrade/install files
! removed admin backup option (no longer in SMF 2.1)
! removed readme_update.html

Signed-off-by: Antes <antes@simplemachines.org>
Merge pull request #2498 from Antes/readme

meh... readme but but?
What is your Lollipop's color?

! Added support for Chrome (Android) theme-color meta
(Ref: http://updates.html5rocks.com/2014/11/Support-for-theme-color-in-Chrome-39-for-Android)

Signed-off-by: Antes <antes@simplemachines.org>
Merge pull request #2499 from Antes/lollipop

What is your Lollipop's color?
Merge branch 'release-2.1' of github.com:SimpleMachines/SMF2.1 into stuff