Switch devMode mode to using the the localStorage variable okcpDevMode. Enable/disable by setting to "true" in console using localStorage.setItem("okcpDevMode","true")
First rough draft at making suggestions persistent. Its rough and needs cleanup, but shows the idea.

It makes the following changes:
- Suggestions are stored in localStorage. So they persist across refreshes and sessions.
- Persisted suggestions can be cleared with Clear Suggestions button.
- Suggest Question is shown for all questions (when enabled) to make it easy to suggest questions for new categories.
- The list of existing categories for each question is shown.
- Gets rid of all the dialogs, including the verification dialogs and the category dialogs. The user is expected to read wiki and know what they are doing.
- Categories are no longer shown in the suggested text. Instead the user is asked to group by them in their email. With an update in the wiki page I think this will work better. The grouping by category is very simple now in the new style.
- Includes a link back to wiki to explain how to use it.

Work still to do:
- Suggest questions is not shown when moving to a new page. This is because the extension currently doesn't catch page transitions (it only loads on a new page). The workaround is to simply refresh the page. Since the state is persisted they are all there after refreshing.
- Style cleanup (including introducing constants and some refactoring)
Get rid of duplicated code in logCurrQuestionData by just having it take the JSOB object
Uses JSON. stringify space argument as suggested by @benjaffe
Update answer parsing code to handle the new question style (that has no their answer). Fixes answerText, score, weight.
switch to using _OKCP.storage rather than localStorage
filter out duplicates of current suggestion (leave current as last)
Ignore IntelliJ files
Switch suggest mode to using the the localStorage variable okcpSuggestMode to enable/disable by setting to "true" in console using localStorage.setItem("okcpSuggestMode","true")
Instead of using new-feature CSS, just don't run the suggest question logic at all when not in suggest mode (saves cycles).