Merge pull request #20 from Mitch528/master

Fixed mask issue
Fix a newly introduced issue where the SingleSelectForm would not select the item that was in the textbox to change
Implement searching functionality for all remaining sourcetypes and conditiontypes except for loot templates
Condition-Editor: only allow digits to be entered in the condition textboxes and the searching for condition type REACTION_TO is now a bitmask as expected
Replace all Char.IsNumber checks by Char.IsDigit as we only want actual numbers to be entered. Turns out IsNumber also returns true for some non-ASCII chars.
Changing parameters now only has effect once the user leaves focus on the parameter textbox. Counts for both the SAI-Editor and Condition-Editor parts
Condition-Editor: Fix an issue where values in textboxes would be reset when switching to a new source type and default the textboxes to 0
Condition-Editor: correct all tabindexes
We now close all openforms except for the MainForm when re-connecting
It is no longer possible to open the Condition-Editor while it is already running. Instead, it now brings it to the front for the user.
Update the application version from 1.4.3 to 1.5.0.
Edit the updating part so the application only sends a message there's an update available when the updated version is actually higher than the current one
Completely get rid of the Updater project. We are going to use an installer from now on.
Fix a newly introduced issue where the database would not be used in this session upon pressing the Connect button.
Fix an issue where selecting 'yes' when prompted to load the entryorguid for a different source_type would not actually load the script.
More simplifying of code
The default setting for the world database is now empty rather than 'trinitycore_world'
Condition-Editor: add a button to reset the current session. Gets rid of local changes.
Condition-Editor: loading a condition to edit will also load the ErrorType and ErrorTextId now
Condition-Editor: the condition editor can no longer be really closed. Instead it always just hides in the background when 'closed' so the unsaved conditions aren't lost.