Forum Page altered

* Topics made dynamic to read from the database
* Added a table 'TopicType' in the database to determine where the topic
should be displayed on the website (General, Institution, or Group)
* Limited the amount of text to be displayed in the description of the
topic, by 190 characters (made an extention method on the string type)
* Created stored procedure to retrieve the amount of replies made on a
certain topic
* Created a stored Procedure to retrieve all the topics from the
database with the needed information
* Created a stored Procedure to retrieve a topic from the database by
name
* Added a helpers class with various helping methods (to be added in the
future)
* Deleted the dataset as it is not neccesary