new feature: auto tabindex

Tabindex, in most cases, had incorrect index. Some forms had no
tabindex at  all. Now tabindex_auto.js append tabindex to all
elements by jquery selector ":input, a[name=submit], a.input".
Merge pull request #74 from gescheit/tabindex

new feature: auto tabindex
fix a typo in QUICK_LINK_PAGES description
add CACTI_RRA_ID (follow-up to commit 7bc9ea3)

* proxyCactiRequest(): use the config option, not the hard-coded value
* resetUIConfig(): update for the new option
* upgrade.php: ditto
* install.php: ditto
getNiftySelect(): removed $tree argument