CVS log for rat/map.pm

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- Bug 6975
  Code to trigger updates of cached Supplemental Content information for a
  course moved from londocs.pm to lonnet.pm to facilitate reuse, and called
  after uploading file and/or extracting archive file using Course Editor.

- Using "multiple" radio and checking "Remove All" in Course Editor results
  in a map containing only zombies, so map::startfinish() needs to add both
  start and finish.

- course's environment now has: internal.contentchange to store timestamp
  of when folders/composite pages uploaded to main content area of a
  course last changed.
- map::storemap() includes additional (third) arg -- if true, will cause
  update to internal.contentchange in course's environment.db
- internal.contentchange is also updated by nightly run of refresh_courseids.db
  in case course modification occurred on pre-2.11 server.
- internal.contentchange is stored for 10 mins in memcached, via &get_coursechange()
  routine in lonnet.pm

- When using external resources from a SSL web server, don't strip out the https://
part - otherwise constructed link (e.g., adm/wrapper/ext/example.com) is without any indication that a site uses https.
- In sequence file src is http://https:// ....
   - Remove the surplus http:// prefix when generating Edit link etc.

- Regular Expressions for both http and https.

Past tense of "occur" is "occurred" (rr!)
Also added some missing &mt() calls and corrected some other little typos

- the existing map flattening was very slow this preserves most orderings while be much much faster

- the sorting of the resources in the maps is really really slow
  for larger (~80ish) maps make it avoidable if we don't care

- neccearry bits for proper editing or restoring of deleted resources

- when having multipled deleted resources with the same urls, restore
  the one with id you wanted to restore

- removing some &colon manipulations to use the qt(un)escape ruotines
- switching qtesacpe to do no html escaping, the title as returned from it is the exact text to display (as most places expect)

- when using enities in titles, maps would get saved incorrectly

- revert to not announcing a -1 as an error as it just indicates the file doesn't exist. In this case outstr will be returned with undef as it's value.

- lots of \w -> probper regexp replacements

Checking for existence of allgroups_folder.sequence uses map.pm to check the file system instead of using navmap object to check current user's session.

Locking added while allgroups_folder.sequence is being added, to avoid contention between two CCs adding the first group to a course at the same time.

rat::loadmap() now checks for a return value of -1, as lonnet::getfile() returns -1 when the file is missing.  Not sure when the existing branch (checks for -2) is triggered.

- more of BUG#4965, trying to seperate base routines from handlers
   - map.pm contains copies fo routines from lonratedt.pm and lonratsrv.pm
     for 2.3 I plan to eliminate the originals and the rest to use the new routines