dont remove more lines than exist in the whole text
wrap appendRevision in try-catch block
be more strict in checkRep
fix flowing of items in editbar
support indentation up to 16 levels and dont go back afterwards
support for export
removing dokuwiki
remove trailing enter from apikey
Prevent server crash if author is not set
Merge pull request #2399 from ether/remove-dokuwiki

removing dokuwiki
Fix AttributeManager#removeAttributeOnLine: Only remove a single attrib
Merge pull request #2400 from Gared/fix/author-not-set

Prevent server crash if author is not set
Revert "be more strict in checkRep"

This reverts commit 22803da42f4f8c6aeccc15d0a916bae6332a8652.
Localisation updates from https://translatewiki.net.
Merge pull request #2404 from webzwo0i/sanity-in-atext

block changeset if it deletes more lines than exist in the whole pad
Merge pull request #2402 from ether/fix-attribmanager-removeLineAttrib

Fix removeAttributeOnLine: Only remove a single attrib
minor ts bg fix
timeslider fixes
Merge pull request #2398 from ether/indentLevels

Indent levels
AttribManager#removeAttribOnLine: Remove Linemarker entirely if there's nothing else left