Load selected feed after a short timeout

Avoid firing multiple server requests if the user is navigating up/down
the tree list with the keyboard. Instead, wait till the user has stopped
navigating for at least 250ms.
Don't preload audio attachments.
adding Korean in the language list
colorPalette: try checking imagesize before invoking GD
.\locale\ko_KR\*
updating korean resources
Revert "updating korean resources"

This reverts commit 4444db8cc845ec398792c877aa7fe5748e9fcb25.
updating resources 1758
add ko resources

add ko resources
adding ko resources

test
adding only po
adding only mo
update 1826
commit from shell
Small improvements to Spanish
Merge pull request #224 from Menti/master

Small improvements to Spanish
do no try to pass MS icon files to GD
Merge branch 'master' of github.com:gothfox/Tiny-Tiny-RSS
Merge pull request #226 from mhaley/patches-no-preload

Don't preload audio attachments.
Merge pull request #223 from mhaley/patches-viewfeed-timeout

Load selected feed after a short timeout