Revert "Remoiving Code Snippet spike from production"

This reverts commit c1470971f05d52ee3a41978039f00de0d92feb2b.
DNN-3619 file upload js component
DNN-3619 - fixed stylization and search reset issues
3619 - fixed stylization and search reset issues
dnn-4006 The www.dnnsoftware.com cannot be upgraded to 7.2.0
Changed javascript library logic to detect any requests for missing libraries and in the case of legacy jQuery registrations inject old CDF references (note: checking in to create upgrade builds for testing)
DNN-3820 - encapsulated content url pertinent logic by the controller
DNN-3820 - set the manual link href form the retrieved settings
dnn-4004 search text needs encoded/decoded for use in the search service
added encoding/decoding to search term to ensure it can handle characters that would break javascript parameters
Fix bug DNN-3777: when there is no module in array just return null.
Fix bug DNN-3466: add the try-catch to handle exception when generate url.
Fix bug DNN-3964: need resize the tool buttons when activate a tab.
DNN-4001 Fixed encoding returned by Json.Serialize
DNN-4020 - DAM > Renaming files doesn't work
dnn-4020
DAM > Renaming files doesn't work
Updated legacy jQuery.Register method to ensure migrate is called each time
dnn-3413 Host SMTP password stored on clear text when using Basic Authentication
Replaced methods with FIPS-140 compliant versions (using the FIPS version of AES)
dnn-4006 The www.dnnsoftware.com cannot be upgraded to 7.2.0
removed httpcontext dependency
refactored code to not require installation check
cleaned up code
Updating version for Platform 721
Fix bug DNN-4031: add a reindex flag during upgrade process so that user indexer will re-index whole users after upgrade, also set the search document's modification time with module's modification time if its empty.
Adding 7.2.1 dataprovider
DNN-3974 > SI: Cant select year earlier than 1980

fixed by setting a new mindate for date controls: this.MinDate = (DateTime)SqlDateTime.MinValue;

Did this for both the DnnDataPicker and the DnnDateTimePicker.