ui: automatically focus the sequence input box in browsers that support it
ui: automatically focus the sequence input box in browsers that support it

SequenceServer expects its users to paste the input sequence the first thing
when the application loads. Automatically focussing the sequence input box (in
modern/supported browsers) lets users paste the input sequence quickly, using
keyboard shortcuts.

Signed-off-by: Anurag Priyam <6e6ab5ea9cb59fe7c35d2a1fc74443577eb60635@gmail.com>

jasminZ/sequenceserver,vivekiitkgp/sequenceserver,deepakunni3/sequenceserver,IsmailM/sequenceserver,jasminZ/sequenceserver,elsiklab/sequenceserver,vivekiitkgp/sequenceserver,lepbase/lepbase-sequenceserver,jasminZ/sequenceserver,yeban/sequenceserver,yeban/sequenceserver,deepakunni3/sequenceserver,aldermossy/sequenceserver,deepakunni3/sequenceserver,yeban/sequenceserver,elsiklab/sequenceserver,IsmailM/sequenceserver,aldermossy/sequenceserver,yeban/sequenceserver,vivekiitkgp/sequenceserver,lepbase/lepbase-sequenceserver,aldermossy/sequenceserver,elsiklab/sequenceserver,lepbase/lepbase-sequenceserver,IsmailM/sequenceserver,aldermossy/sequenceserver