* putSaver: detect edit conflicts to prevent clobbering, if possible
if the server supplies an ETag, we send it back when saving, allowing
the server to detect edit conflicts and respond with 412 (cf.
https://www.w3.org/1999/04/Editing/)
caveats:
* this only kicks in after the first save, as we don't have access to
the ETag when first loading the document
* there's no recovery mechanism (e.g. resetting `this.etag` in order to
force clobbering), other than manually reloading the document
* putSaver: retrieve ETag upon initialization for clobbering protection
this addresses one of the caveats from the previous commit
(2d75cb83af) - while theoretically prone
to a race condition, it seems unlikely that saving will be triggered
before the server responds
* putSaver: simplify URI extraction
this simplifies the approach introduced in
f51f6bf774, with the purpose of removing
the fragment identifier
* putSaver: localize error message
* putSaver: switch to built-in HTTP helper
in the process, fixed ETag assignment in `#save` method (was
`this.etag`, now `self.etag`) as well as a syntax error due to a missing
closing brace
* putSaver: consolidate URI handling
The present implementation of relative dates doesn’t auto-update, nor
does it work effectively in static renderings. Until that’s fixed, I
think it is better to switch to absolute dates.
Fixes#1450
Provides support for an integrated plugin library that can be used to
install plugins from tiddlywiki.com directly to wikis hosted online or
offline. See the Plugins tab of Control Panel.
Todo:
* Error checking(eg libraryserver.js HTTP GET)
* Translatability
* Documentation
** $:/tags/ServerConnection
** savelibrarytiddlers command
1. Moved some methods out of boot.js because they are not needed until
after bootup
2. Added alternate message for editing an overridden shadow tiddler
3. Minor style tweaks
Should only display the confirmation if the shadow tiddler has not been
overridden in the first place. It checks this by looking for the
existence of a modified field for which the default system based shadow
do not have until a user changes them.
This addresses the second line item on issue #570
We will need new translations for the added string
`ConfirmEditShadowTiddler`
Now the $:/ part of the name is rendered in grey, making the main part
of the title more prominent.
@tobibeer suggested this a long time ago; good idea!
