RTL in extended search

[arildm]

In the new Arabic mode with dir: rtl, the extended search mode could use some text direction fixes:

• dir="rtl" in the input box for the word attribute (which is the only attribute at this point)
• I guess the visual direction of token boxes should also be from right to left

https://spraakbanken.gu.se/korp/?mode=arabic#?corpus=arabic-ebooks&cqp=%3Csentence%3E%20%5B%5D&search=cqp&search_tab=1