[mms] Optimizations to IMAP tokenizer.

Not much more than removing the overhead of function calls that are
(potentially) called 1,000s of times.

Specifically, in the testLargeEnvelopeData test, these changes save on
something like 700,000+ individual method calls, a ~30% improvement
(albeit in an extreme use-case).
Better duration display
Move ruleDescription to Ingo_Storage
Update striping while dragging
tweak
[mms] Optimizations to address parsing.
Move cheaper comparison first
addPollList() isn't needed for nav_poll_all installations
Fix array get return of IMP_Ftree_Prefs_Poll for nav_poll_all installations
tweaks; variable sorting
[mms] Optimize Horde_Url#toString().

Prepping the parameter list can be quite costly, so cache results.

Total execution time of function when displaying the MIME torture test
e-mail in IMP (popup window) dropped from 5% -> 2.5%.