…p later

…article.removeTag function

handle the special case for {{globalize}} tag, minor
code cleanup elsewhere

tagging. Also changed the code structure in Twinkle.tag.callbacks.article

removals to process simultaneously

ones listed in Twinkle, provided that the
template has the correct |name= set

and redirect tags as well

- Use single API call for getting list of redirects of multiple templates,
simplifying the code a great deal. No more use of recursion. The max results
limit of 500 won't be breached in any realistic situation.
- Remove unneccessary condition checks.

to Twinkle.tag.canRemove
- Also added missing "var"s (lint error)
- Disallow untaggging on last diff
- fix var-undef error

- rename identifiers for clarity
-- removeFromParamsToRemove --> removeTags
-- removeTag --> (now an anonymous function)
-- generateAlreadyPresentTagsCheckboxes --> makeCheckboxesForAlreadyPresentTags
-- params.toRemove --> params.tagsToRemove
-- params.toRemain --> params.tagsToRemain
- fix wording in menu hover tooltip, and other minor fixes from code review by Amory
- remove a bit of indentation hell by using "if (! ...) return; do stuff;" rather than "if (...) {do stuff;}"

move multipleIssuesException to below article tags list, some comment changes,
other minor fixes