update tablesorter from 2.0.5b to 2.18.3
Extract large text fields (Code, CompilationError, Output) from UserSolution
Merge remote-tracking branch 'upstream/master' into extractSolutions

Conflicts:
	src/uLearn.Web/uLearn.Web.csproj
Merge remote-tracking branch 'upstream/master' into tablesorterUpdate

Conflicts:
	src/uLearn.Web/Scripts/_references.js
* check update tablesorter in Quiz Analytics
* small sorting fixes
small fixes in U12_Inheritance
fix white-spaces and comments in table-configurator.js
remove default-value and deprecated options in table-configurator.js
Merge remote-tracking branch 'upstream/master' into tablesorterUpdate

Conflicts:
	src/uLearn.Web/Scripts/_references.js
whitespace fixes
Merge branch 'OOP_Lectures'

Conflicts:
	src/courses/BasicProgramming/Slides/U12_Inheritance/S085_IComparerTask.cs
Review fixes
Merge branch 'master' of https://github.com/kontur-edu/uLearn
+ Digger
typo
small fixes
OOP UI unit
OOP simple UI task
OOP UI Task
fix small bugs in BasicProgramming slides